Materiały źródłowe

• #1 The Differential Diagnosis of Food Intolerance

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2695393/

  More than 20% of the population in industrialized countries suffer from food intolerance or food allergy. […] The majority of cases of food intolerance (15% to 20%) are due to non-immunological causes. These causes range from pseudoallergic reactions to enzymopathies, chronic infections, and psychosomatic reactions that are associated with food intolerance. […] The prevalence of true food allergy, i.e., immunologically mediated intolerance reactions, is only 2% to 5%. […] The differential diagnosis of food intolerance is broad. Therefore, a structured diagnostic algorithm with input from multiple clinical disciplines should be applied. […] Food intolerance of functional origin is often caused only by an isolated functional disorder (such as lactase deficiency in the small intestine) and is initially unaccompanied by any other anatomical or morphological changes in the gastrointestinal tract.

• #2 Do you suspect you have a food intolerance? Learn your triggers and how to – Regional One Health

  https://www.regionalonehealth.org/blog/2022/04/13/do-you-suspect-you-have-a-food-intolerance-learn-your-triggers-and-how-to-find-relief/

  Food intolerances are common conditions that can cause symptoms like bloating, gas, diarrhea and stomach pain. […] If you’re experiencing these issues, talk to your health care provider they can help rule out other problems and figure out which foods are causing your problems. […] A food intolerance can turn the joy of eating into a source of misery think gas, stomach pain and worse. […] Up to 20 percent of Americans suffer from a food intolerance, so it’s important to understand these conditions and learn to avoid common triggers. […] A food intolerance is different than a food allergy, she said. Food allergies involve the immune system reacting to something you eat. Food intolerances happen when your body has a hard time digesting a certain food, and that causes symptoms. […] Since food intolerances occur when the body has trouble digesting a certain food, symptoms are mostly digestive in nature stomachache, diarrhea, nausea, vomiting, gas and bloating. Some people also report headaches and fatigue.

• #3 Food allergy vs. food intolerance: What’s the difference?

  https://www.mayoclinic.org/diseases-conditions/food-allergy/expert-answers/food-allergy/faq-20058538

  Physical reactions to certain foods are common, but most are caused by a food intolerance rather than a food allergy. A food intolerance can cause some of the same signs and symptoms as a food allergy, so people often confuse the two. […] A true food allergy affects the immune system. Even small amounts of the offending food can trigger a range of symptoms, which can be severe or life-threatening. In contrast, a food intolerance often affects only the digestive system and causes less serious symptoms. […] If you have a food intolerance, you may be able to eat small amounts of the offending food without trouble. You may also be able to prevent a reaction. […] Symptoms often include gastrointestinal issues as well as those unrelated to the digestive system, such as joint pain and headaches. However, people with celiac disease are not at risk of anaphylaxis. […] If you have a food intolerance, your doctor may recommend steps to aid digestion of certain foods or to treat the underlying condition causing your reaction.

• #4 Food Allergy | Anaphylaxis | Food Allergies | MedlinePlus

  https://medlineplus.gov/foodallergy.html

  A food intolerance is different than a food allergy. If you have a food intolerance, you also have symptoms when you eat that food. But these are typically just digestive symptoms such as bloating and gas. Also, an intolerance is not an immune system reaction. […] Food allergy symptoms usually start within a few minutes to two hours after you eat that food. They may include: Hives, Flushed skin or rash, Tingling or itchy sensation in the mouth, Face, tongue, or lip swelling, Vomiting and/or diarrhea, Abdominal (belly) cramps, Coughing or wheezing, Dizziness and/or lightheadedness, Swelling of the throat and vocal cords, Trouble breathing. […] In rare cases, a food allergy can cause a life-threatening reaction called anaphylaxis. It may start out with some milder symptoms, but then it becomes more serious. It can lead to: Narrowed airways in the lungs, Severe trouble breathing because of swelling in the throat, Severe lowering of blood pressure and shock („anaphylactic shock”), Loss of consciousness.

• #5 The Differential Diagnosis of Food Intolerance

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2695393/

  Food intolerance of structural etiology, on the other hand, has its origin in an anatomically and morphologically demonstrable disease involving a structural alteration in the gastrointestinal tract. This results secondarily in food-associated symptoms. […] The range of differential diagnoses of the non-immunologically mediated forms of food intolerance further includes chronic infections (such as lambliasis), neuroendocrine tumors (such as carcinoid), and psychosomatic reactions that cause or can imitate symptoms of intolerance. […] The incidence of food allergies is subjectively overestimated. In one survey, one fourth of the population claimed to be suffering from food allergy. […] The actual prevalence in adults is 2% to 5%, with the different organ systems (skin, gastrointestinal tract, cardiovascular system, lungs etc.) being described with differing frequency as the site of manifestation of the allergy depending on the patient sample studied.

• #6 Food allergy – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/food-allergy/symptoms-causes/syc-20355095

  For some people, an allergic reaction to a particular food may be uncomfortable but not severe. […] Food allergy symptoms usually develop within a few minutes to two hours after eating the offending food. Rarely, symptoms may be delayed for several hours. […] The most common food allergy symptoms include: Tingling or itching in the mouth. Hives, itching or eczema. Swelling of the lips, face, tongue, and throat or other parts of the body. Belly pain, diarrhea, nausea or vomiting. Wheezing, nasal congestion or trouble breathing. Dizziness, lightheadedness or fainting. […] In some people, a food allergy can trigger a severe allergic reaction called anaphylaxis. This can cause life-threatening symptoms, including: Constriction and tightening of the airways. A swollen throat or the sensation of a lump in your throat that makes it hard to breathe. Shock with a severe drop in blood pressure. Rapid pulse. Dizziness, lightheadedness or loss of consciousness.

• #7 Food intolerance: Causes, types, symptoms, and diagnosis

  https://www.medicalnewstoday.com/articles/263965

  A person with a food intolerance will often experience discomfort soon after eating certain foods. The symptoms are varied and usually involve the digestive system. […] Common symptoms of food intolerance include: bloating, excess gas, stomach pain, diarrhea, migraine, headaches, a runny nose, malaise, which is a general feeling of being under the weather. […] In people with a food intolerance, the amount of that food they eat determines the severity of their symptoms. […] The symptoms of food intolerances can take a while to emerge. The onset may occur several hours after ingesting a food, and the symptoms may persist for several hours or days. […] These conditions have some symptoms in common. However, food intolerance symptoms tend to take longer to appear than food allergy symptoms.

• #8

  https://uk.checkmybodyhealth.com/blogs/intolerances-allergies/how-long-after-eating-does-a-food-intolerance-show?srsltid=AfmBOoov7UAAngu5smLAHjunN-UZTG0xTrhW8bR5_F2Xr270_qPyqhN2

  Food intolerance symptoms can appear anywhere from minutes to days after eating, depending on the type of intolerance and individual sensitivity. Common intolerances like lactose and histamine often cause immediate reactions, while FODMAP or gluten sensitivity may trigger delayed symptoms. […] Some intolerances, like lactose intolerance, can trigger symptoms within minutes or hours. Others, such as those related to FODMAPs or histamine, might not make themselves known for a day or more. The delay is due to the time it takes for the body to process the food and for specific chemical reactions to occur. […] Understanding the timeline of food intolerance symptoms is key to identifying your triggers. Here’s a breakdown of how long it typically takes for different reactions to appear: […] Symptoms like gas, bloating, diarrhoea, and stomach cramps often appear within 30 minutes to two hours after consuming dairy.

• #9 Food allergy and intolerance | Better Health Channel

  https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/food-allergy-and-intolerance

  It can be difficult to tell the difference between the symptoms of food allergy and food intolerance. Usually, symptoms caused by food allergy develop very soon after consuming the food. While symptoms caused by food intolerance can be immediate, they may also take 12 to 24 hours to develop. Food intolerance reactions are usually related to the amount of the food consumed. They may not occur until a certain amount (threshold level) of the food is eaten, but this amount varies for each person. The symptoms of food allergy and intolerance can also be caused by other conditions, so it is important to see your doctor for a medical diagnosis.

• #10

  https://uk.checkmybodyhealth.com/blogs/intolerances-allergies/how-long-after-eating-does-a-food-intolerance-show?srsltid=AfmBOoov7UAAngu5smLAHjunN-UZTG0xTrhW8bR5_F2Xr270_qPyqhN2

  Symptoms can range from headaches, flushing, and hives to digestive issues and nasal congestion, often appearing within minutes to a few hours. […] Symptoms like bloating, gas, stomach pain, and changes in bowel habits often appear several hours after eating high-FODMAP foods, sometimes taking up to a day to fully develop. […] These symptoms can appear hours or days after consuming gluten. […] The exact timing of your symptoms can vary depending on your individual sensitivity, the amount of trigger food consumed, and other factors. […] Food intolerance symptoms can be a frustrating puzzle to solve. Their varying timelines, ranging from minutes to days after eating, often make it difficult to pinpoint the exact culprits.

• #11 How to manage food intolerances • Heart Research Institute NZ

  https://www.hri.org.nz/health/nutrition/how-to-manage-food-intolerances

  Food intolerances can be experienced by many different people in many different ways, with symptoms such as bloating, constipation, distention, wind, pain and discomfort. […] Symptoms may include diarrhoea, bloating/wind, distention/discomfort, constipation, red/itchy skin, and headache/migraine. […] A lot of research has been done over the past 10 years or so, with findings that a low FODMAP diet is the best way to manage symptoms of IBS and help people discover exactly which foods they’re intolerant to. […] Many symptoms of food intolerance happen in the lower digestive tract (large intestine), which takes food 12-24 hours to get to after being eaten. If you experience symptoms straight after a meal, it’s not likely that meal that caused the symptoms.

• #12 Food Intolerance: Symptoms, Causes and Treatment Options

  https://my.clevelandclinic.org/health/diseases/21688-food-intolerance

  Food intolerances affect your digestive system. People who suffer from an intolerance, or sensitivity, cant break down certain foods. They develop gas, diarrhea and other problems. An intolerance or food sensitivity is inconvenient but not life-threatening. […] Food intolerance means your gut is sensitive to certain foods and cant tolerate them. When you eat these foods, you may experience uncomfortable symptoms like gas, diarrhea and abdominal pain. […] Symptoms of a food intolerance include: Abdominal (belly) pain. Diarrhea. Gas and bloating. Headaches or migraines. Heartburn. Nausea. Upset stomach. […] Food intolerances tend to be lifelong. Most people can manage symptoms if they reduce or cut out foods that cause digestive problems. Food intolerance may be an inconvenience (and the symptoms unpleasant), but it isnt a life-threatening problem like a food allergy.

• #13 Food intolerance

  https://www.nhs.uk/conditions/food-intolerance/

  A food intolerance is when you have difficulty digesting certain foods or ingredients in food. It’s not usually serious, but eating the food you’re intolerant to can make you feel unwell. […] If you have a food intolerance, you usually get symptoms a few hours after eating the food or ingredient you’re intolerant to. Common symptoms include: diarrhoea, bloating, farting, tummy pain. But there are lots of other possible symptoms, including headache, feeling tired or exhausted, feeling sick, constipation, joint pain or rashes. Symptoms can last for a few hours or days. […] A food intolerance is caused by your body not being able to digest a certain food or an ingredient in food. […] If you have a food intolerance, try to avoid or reduce eating the food you’re intolerant to, including foods where you’re intolerant to any of the ingredients.

• #14 Food intolerance – Australasian Society of Clinical Immunology and Allergy (ASCIA)

  https://www.allergy.org.au/patients/food-other-adverse-reactions/food-intolerance

  Food intolerances describe a wide range of adverse reactions to foods. […] Symptoms caused by food intolerance can affect the: […] Gut causing bloating, gas/flatulence, irritable bowel syndrome (IBS), diarrhoea, constipation, and stomach pain. […] Nervous system causing headaches, migraines, and fatigue. […] Skin causing rashes, eczema, hives (urticaria), swellings, and mouth ulcers. […] Airways causing an itchy, runny nose and increased mucus in the sinuses. […] Lactose intolerance is an enzyme deficiency where people dont have enough lactase enzyme to break down lactose in their diet. These people can get bloating, gas/flatulence, stomach upset, and diarrhoea after having dairy products. […] Non-coeliac gluten intolerance is a recently recognised condition which can cause symptoms such as abdominal disturbance (usually bloating but sometimes other symptoms as well), and occasionally discomfort and tiredness.

• #15 Food intolerance – Wikipedia

  https://en.wikipedia.org/wiki/Food_intolerance

  Food intolerance is more chronic, less acute, less obvious in its presentation, and often more difficult to diagnose than a food allergy. Symptoms of food intolerance vary greatly, and can be mistaken for the symptoms of a food allergy. […] Food intolerance symptoms usually begin about half an hour after eating or drinking the food in question, but sometimes symptoms may be delayed by up to 48 hours. […] Food intolerance can present with symptoms affecting the skin, respiratory tract, gastrointestinal tract (GIT) either individually or in combination. […] Food intolerance has been found associated with irritable bowel syndrome and inflammatory bowel disease, chronic constipation, chronic hepatitis C infection, eczema, NSAID intolerance, respiratory complaints, including asthma, rhinitis and headache, functional dyspepsia, eosinophilic esophagitis and ear, nose and throat (ENT) illnesses.

• #16 Food Intolerance | Children’s Hospital of Philadelphia

  https://www.chop.edu/conditions-diseases/food-intolerance

  People have a food intolerance when they have difficulty digesting certain foods and have an unpleasant physical reaction when they eat those foods. […] Symptoms of food intolerance vary by individual, the type of food that causes the reaction, and the amount of the food eaten. Problematic food eaten in small amounts may cause no symptoms, while larger portions may cause great discomfort. Symptoms may include: Nausea, Stomach pain or cramps, Gas or bloating, Vomiting, Heartburn or acid reflux, Diarrhea, Constipation, Headaches, migraines, Skin rash or flushed skin, Hives, Fatigue, Irritability or nervousness (from caffeine intolerance), Anemia. […] There is no treatment for food intolerance, but uncomfortable symptoms can be avoided by eliminating problem-causing foods from your child’s diet.

• #17 Food intolerance – Australasian Society of Clinical Immunology and Allergy (ASCIA)

  https://www.allergy.org.au/patients/food-other-adverse-reactions/food-intolerance

  Food intolerances describe a wide range of adverse reactions to foods. […] Symptoms caused by food intolerance can affect the: […] Gut causing bloating, gas/flatulence, irritable bowel syndrome (IBS), diarrhoea, constipation, and stomach pain. […] Nervous system causing headaches, migraines, and fatigue. […] Skin causing rashes, eczema, hives (urticaria), swellings, and mouth ulcers. […] Airways causing an itchy, runny nose and increased mucus in the sinuses. […] Lactose intolerance is an enzyme deficiency where people dont have enough lactase enzyme to break down lactose in their diet. These people can get bloating, gas/flatulence, stomach upset, and diarrhoea after having dairy products. […] Non-coeliac gluten intolerance is a recently recognised condition which can cause symptoms such as abdominal disturbance (usually bloating but sometimes other symptoms as well), and occasionally discomfort and tiredness.

• #18 Food Allergies vs. Food Intolerances: Differentiating Symptoms and Finding Relief – ADH – Windsor Center for Digestive Health

  https://windsordigestivehealth.com/food-allergies-vs-food-intolerances-differentiating-symptoms-and-finding-relief/

  Food intolerances are becoming more common and can cause significant discomfort in those who suffer from them. It is essential to understand the difference between a food allergy and a food intolerance, as they have different symptoms and require different treatment approaches. Food intolerances occur when the digestive system has difficulty breaking down certain foods, leading to uncomfortable symptoms such as bloating, gas, diarrhea, or constipation. […] Identifying an intolerance can be tricky, as symptoms can vary widely and often take longer than those of allergies. […] Here are some common symptoms associated with food intolerances: Digestive issues: These can include bloating, gas, diarrhea, or constipation. Stomach pain: Discomfort or pain in the abdomen is a common symptom. Heartburn: This burning sensation in the chest is often a symptom of food intolerance. Headaches: Some individuals may experience headaches or migraines. Fatigue: Feeling fatigued after meals can be a symptom. Skin problems: Some people may experience skin issues like rashes or eczema. Mood changes: Irritability, nervousness, or sudden mood changes can also be a sign. Runny nose or sneezing: Some individuals may experience these symptoms, particularly with histamine intolerance. Increased heart rate: This can occur particularly with sensitivity to certain foods like caffeine. Brain fog: Difficulty concentrating or confusion can sometimes be associated with food intolerances. […] If you suspect you have a food intolerance, you must seek medical advice for a proper diagnosis and treatment plan.

• #19 Food Intolerance | Allergy UK | National Charity

  https://www.allergyuk.org/resources/food-intolerance/

  Food intolerances can take some time to diagnose. Although not life threatening, food intolerance can and often does, make the sufferer feel extremely unwell and can have a major impact on working and social life. […] Symptoms of food intolerance There are many possible symptoms that could be caused by having an intolerance to food. Depending on the type of food that is suspected depends on the possible range of symptoms. These symptoms may also be experienced in other conditions in the absence of food being a problem so should always be discussed with a health professional. Symptoms commonly effect the digestive, skin and respiratory systems. […] Skin symptoms may include flushing of the skin, urticaria (raised red, itchy rash), eczema flares or angioedema (deep swelling of the tissue). Digestive symptoms can include abdominal pain, diarrhoea, bloating, stomach cramps, and constipation. The respiratory (breathing) system can also be affected rhinitis, breathing difficulties and a wheeze. Other symptoms include headaches and palpitations.

• #20 The 8 Most Common Food Intolerances

  https://www.healthline.com/nutrition/common-food-intolerances

  Food intolerance may cause symptoms similar to a food allergy in some people. These include diarrhea, bloating, and rashes. If you suspect you have a food intolerance, its important to speak with a doctor. […] Food intolerances and sensitivities can be hard to diagnose due to their wide range of symptoms. […] When you have a food intolerance, symptoms usually begin within a few hours of eating the food that you are intolerant to. Yet, symptoms can be delayed by up to 48 hours and last for hours or even days, making the offending food especially difficult to pinpoint. […] While symptoms of food intolerances vary, they most often involve the digestive system, skin and respiratory system. Common symptoms include diarrhea, bloating, rashes, headaches, nausea, fatigue, abdominal pain, runny nose, reflux, and flushing of the skin.

• #21 Food intolerances | Nutrition Australia

  https://nutritionaustralia.org/fact-sheets/food-intolerances/

  Food intolerance can result in a range of symptoms that can affect the following bodily systems: […] Gastrointestinal tract: bloating, diarrhoea, constipation, stomach pain […] Respiratory tract: itchy, runny nose, sinus congestion […] Nervous system: irritable behaviour, overactivity, headaches, migraines, fatigue […] Skin: nappy rash, eczema, hives, swellings, mouth ulcers. […] Severity of the reaction depends on the dose of chemical consumed and tends to be delayed (hours to days) which makes it difficult to identify the cause. […] There are currently no reliable clinical tests to diagnose food intolerance.

• #22 Food allergy vs. food intolerance: What’s the difference?

  https://www.mayoclinic.org/diseases-conditions/food-allergy/expert-answers/food-allergy/faq-20058538

  Physical reactions to certain foods are common, but most are caused by a food intolerance rather than a food allergy. A food intolerance can cause some of the same signs and symptoms as a food allergy, so people often confuse the two. […] A true food allergy affects the immune system. Even small amounts of the offending food can trigger a range of symptoms, which can be severe or life-threatening. In contrast, a food intolerance often affects only the digestive system and causes less serious symptoms. […] If you have a food intolerance, you may be able to eat small amounts of the offending food without trouble. You may also be able to prevent a reaction. […] Symptoms often include gastrointestinal issues as well as those unrelated to the digestive system, such as joint pain and headaches. However, people with celiac disease are not at risk of anaphylaxis. […] If you have a food intolerance, your doctor may recommend steps to aid digestion of certain foods or to treat the underlying condition causing your reaction.

• #23 Symptoms of Allergic Reactions and Food Intolerances

  https://familymedicineaustin.com/food-allergies-and-intolerances/

  In people with food intolerance, the severity of their symptoms is determined by the amount of problem food that the person eats. […] Unlike most cases of food allergies, the symptoms of food intolerances can take a while to emerge. The onset tends to occur several hours after ingesting a food, and the symptoms may persist for several hours or days.

• #24 Food intolerance: Causes, types, symptoms, and diagnosis

  https://www.medicalnewstoday.com/articles/263965

  A person with a food intolerance will often experience discomfort soon after eating certain foods. The symptoms are varied and usually involve the digestive system. […] Common symptoms of food intolerance include: bloating, excess gas, stomach pain, diarrhea, migraine, headaches, a runny nose, malaise, which is a general feeling of being under the weather. […] In people with a food intolerance, the amount of that food they eat determines the severity of their symptoms. […] The symptoms of food intolerances can take a while to emerge. The onset may occur several hours after ingesting a food, and the symptoms may persist for several hours or days. […] These conditions have some symptoms in common. However, food intolerance symptoms tend to take longer to appear than food allergy symptoms.

• #25 Food Allergy or Food Intolerance?

  https://www.monashfodmap.com/blog/food-allergy-or-food-intolerance/

  The symptoms of food intolerance predominately affect one system. […] This in turn can result in higher levels of gas production by bacteria that live in the large intestine or cause excess water to be drawn into the bowel, leading to symptoms such as bloating, abdominal pain and changes in bowel habit (i.e. diarrhoea or constipation). […] Onset of symptoms is also usually quite delayed (several hours to several days) and may not occur every time the offending food is consumed. […] The symptoms of food intolerance are therefore dose responsive, meaning that symptoms will not be experienced until a certain amount or threshold dose of the food has been eaten. […] First onset of a food intolerance can occur at any age, but unlike food allergies, food intolerances cannot be diagnosed using any specific test. […] Elimination and food re-challenge dietary approaches, such as the low FODMAP diet, are therefore often necessary to pinpoint particular foods that may be triggers of food intolerance symptoms.

• #26 Food Intolerance Vs. Allergy: Triggers, Symptoms, and More

  https://resources.healthgrades.com/right-care/digestive-health/food-intolerance

  If you have a food intolerance, you will experience adverse reactions to eating certain foods, such as food containing lactose or gluten. An inability to digest these foods can result in symptoms including bloating, diarrhea, and gas. […] Food intolerance occurs when you are unable to properly digest certain foods. Once you consume a substantial amount of the food, symptoms such as bloating and diarrhea will gradually begin over a few hours. […] Symptoms of food intolerance include: abdominal pain, bloating, gas, diarrhea, itchiness, skin rash, headache, sweating, palpitations, tremor, breathing problems, tightness across the chest or face. […] Food intolerance symptoms typically occur within a few hours after eating the food. In some cases, they may take 12–24 hours to occur. […] The severity of symptoms will depend on the amount of food consumed. Each person will have a different tolerance or threshold level for how much of a certain food they can eat before they experience symptoms of intolerance.

• #27 Food Intolerance: Symptoms, Causes and Treatment Options

  https://my.clevelandclinic.org/health/diseases/21688-food-intolerance

  Food intolerances affect your digestive system. People who suffer from an intolerance, or sensitivity, cant break down certain foods. They develop gas, diarrhea and other problems. An intolerance or food sensitivity is inconvenient but not life-threatening. […] Food intolerance means your gut is sensitive to certain foods and cant tolerate them. When you eat these foods, you may experience uncomfortable symptoms like gas, diarrhea and abdominal pain. […] Symptoms of a food intolerance include: Abdominal (belly) pain. Diarrhea. Gas and bloating. Headaches or migraines. Heartburn. Nausea. Upset stomach. […] Food intolerances tend to be lifelong. Most people can manage symptoms if they reduce or cut out foods that cause digestive problems. Food intolerance may be an inconvenience (and the symptoms unpleasant), but it isnt a life-threatening problem like a food allergy.

• #28 Food intolerance: Causes, types, symptoms, and diagnosis

  https://www.medicalnewstoday.com/articles/263965

  With a food intolerance, the amount of food the person eats relates to the severity of their symptoms. On the other hand, with a food allergy, even a small amount of food can trigger a severe allergic reaction. […] Food intolerances arise when the body cannot properly digest certain foods. Lactose intolerance and gluten intolerance are common types. […] There is currently no cure for food intolerances. The best way to avoid symptoms of a food intolerance is to avoid certain foods or eat them less often and in smaller amounts.

• #29 Food intolerance

  https://www.nhs.uk/conditions/food-intolerance/

  A food intolerance is when you have difficulty digesting certain foods or ingredients in food. It’s not usually serious, but eating the food you’re intolerant to can make you feel unwell. […] If you have a food intolerance, you usually get symptoms a few hours after eating the food or ingredient you’re intolerant to. Common symptoms include: diarrhoea, bloating, farting, tummy pain. But there are lots of other possible symptoms, including headache, feeling tired or exhausted, feeling sick, constipation, joint pain or rashes. Symptoms can last for a few hours or days. […] A food intolerance is caused by your body not being able to digest a certain food or an ingredient in food. […] If you have a food intolerance, try to avoid or reduce eating the food you’re intolerant to, including foods where you’re intolerant to any of the ingredients.

• #30 Allergy vs Intolerance | Allergy UK | National Charity

  https://www.allergyuk.org/about-allergy/allergy-vs-intolerance/

  Some people experience adverse reactions caused by food. Food intolerances can take some time to diagnose. Although not life threatening, food intolerance can and often does, make the sufferer feel extremely unwell and can have a major impact on working and social life. […] The symptoms caused by these reactions are usually gut symptoms, such as bloating, diarrhoea, constipation and IBS, skin problems such as eczema and joint pain. […] Symptoms commonly effect the digestive, skin and respiratory systems. […] Keeping a food and symptoms diary of the food eaten and symptoms experienced can be a useful way to build up patterns and highlight suspected food related reactions and reproducibility. […] The symptoms of lactose intolerance are: Diarrhoea, Bloating, Flatulence (wind), Abdominal pain or discomfort, Infantile colic, And less commonly, it can cause constipation and nausea.

• #31 Midlife intolerances: signs you may be developing a food intolerance or allergy

  https://www.sanitarium.com/nz/health-nutrition/nutrition/signs-of-food-intolerance-or-allergy

  Did you know you can develop an allergy at any age, to any food, despite having eaten that food without any prior symptoms? […] We also have a number of adults coming to us saying they have a food allergy, when in fact what theyve developed sounds like an intolerance. […] If your symptoms mainly involve the digestive system (like stomach pain, bloating and gas) a few hours after eating certain foods, this is likely an intolerance. […] Like your immune system, your digestive system can also be affected as you age which may see you develop an intolerance later in life. […] Intolerances can be easily managed as most are dose-dependent and are non life-threatening find a sweet spot that your body can handle and you may still be able to enjoy that food, in moderation of course. […] Some intolerances are more common as an adult, like lactose intolerance (up to 70% of the worlds population complain of stomach upset when consuming milk or dairy products) and gluten intolerance. […] Symptoms will appear quickly usually within 20 minutes to 2 hours. They may start off mild, but progress rapidly. […] The most dangerous reactions (anaphylaxis) involve the respiratory and cardiovascular systems and are extremely serious.

• #32 Midlife intolerances: signs you may be developing a food intolerance or allergy

  https://www.sanitarium.com/au/health-nutrition/nutrition/signs-of-food-intolerance-or-allergy

  Did you know you can develop an allergy at any age, to any food, despite having eaten that food without any prior symptoms? […] If your symptoms mainly involve the digestive system (like stomach pain, bloating and gas) a few hours after eating certain foods, this is likely a food intolerance. […] Like your immune system, your digestive system can also be affected as you age which may see you develop a food intolerance later in life. […] Food intolerances can be easily managed as most are dose-dependent and are non life-threatening find a sweet spot that your body can handle and you may still be able to enjoy that food, in moderation of course. […] Symptoms will appear quickly usually within 20 minutes to 2 hours. They may start off mild, but progress rapidly. […] Developing an allergy at any age can be scary, but there are plenty of support networks with resources to help you.

• #33 The Differential Diagnosis of Food Intolerance

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2695393/

  Depending on the patients medical history, a functional or structural cause of the food intolerance will be suspected. […] In many cases, intolerances or food intolerances only develop during the course of the various underlying and concomitant diseases. Some individuals with chronic inflammatory bowel disease, for example, develop meteorism, flatulence, and diarrhea after ingesting milk because of lactase deficiency. […] These intolerances should be identified at an early stage since they aggravate the disease course and complicate dietary management and hence considerably compromise quality of life. […] The symptoms of histamine intolerance are highly variable and affect almost all organs. These range from typical cutaneous effects of histamine (erythema, pruritus, flush, urticaria), gastrointestinal complaints (flatulence, colics, diarrhea), respiratory complaints (nasal obstruction, rhinorrhea, asthma attacks), cardiac complications (hypo- and hypertension, arrhythmias) to headache or dysmenorrhea. […] The classical symptoms of salicylate intolerance are respiratory complaints (blocked or runny nose, sinusitis, nasal polyposis, bronchial asthma), but can also lead to gastrointestinal complaints with meteorism, flatulence, diarrhea and, rarely, to colitis with strictures and ulcers.

• #34 People can have food sensitivities without noticeable symptoms – long-term consumption of food allergens may lead to behavior and mood changes

  https://theconversation.com/people-can-have-food-sensitivities-without-noticeable-symptoms-long-term-consumption-of-food-allergens-may-lead-to-behavior-and-mood-changes-192570

  The prevalence of food allergies is increasing worldwide, approaching an epidemic level in some regions. […] Food allergies, or food hypersensitivities, result from the overreaction of the immune system to typically harmless proteins in food. They can manifest as a spectrum of symptoms, ranging from itching, redness and swelling for milder reactions, to vomiting, diarrhea, difficulty breathing and other potentially life-threatening symptoms for severe reactions. […] But some people who test positive on skin-prick allergy tests with moderate increases in IgE dont notice any allergy-related symptoms when they eat the allergen. This condition is sometimes referred to as asymptomatic sensitization. […] What I and other researchers have found is that food allergens can affect your brain and behavior if youre hypersensitized, even if you dont have typical food allergy symptoms.

• #35 Food intolerance – Wikipedia

  https://en.wikipedia.org/wiki/Food_intolerance

  Food intolerance is more chronic, less acute, less obvious in its presentation, and often more difficult to diagnose than a food allergy. Symptoms of food intolerance vary greatly, and can be mistaken for the symptoms of a food allergy. […] Food intolerance symptoms usually begin about half an hour after eating or drinking the food in question, but sometimes symptoms may be delayed by up to 48 hours. […] Food intolerance can present with symptoms affecting the skin, respiratory tract, gastrointestinal tract (GIT) either individually or in combination. […] Food intolerance has been found associated with irritable bowel syndrome and inflammatory bowel disease, chronic constipation, chronic hepatitis C infection, eczema, NSAID intolerance, respiratory complaints, including asthma, rhinitis and headache, functional dyspepsia, eosinophilic esophagitis and ear, nose and throat (ENT) illnesses.

• #36 Management of Adult Patients with Gastrointestinal Symptoms from Food Hypersensitivity—Narrative Review

  https://pmc.ncbi.nlm.nih.gov/articles/PMC9784954/

  The incidence of food hypersensitivity has increased dramatically over the years not only among children but also in adults. […] Symptoms of many gastrointestinal disorders, especially functional, may be driven by different types of mechanisms, and food intolerance or allergy should be considered as a potential cause. […] Carbohydrate intolerances are the most common type of food hypersensitivity in adult patients, and an elimination diet is effective for reducing symptoms. […] Food hypersensitivity is thought to be a problem in infants or younger children, with a tendency to acquire tolerance over the years. […] Due to the growing number of food allergies and intolerances, an increasing number of children and adult patients search for help by addressing gastroenterologists and other health care providers.

• #37

• #38 The Surprising Symptoms of Food Sensitivities – Caplan Health Institute

  https://caplanhealthinstitute.com/symptoms-of-food-sensitivities/

  Some foods can trigger an autoimmune reaction that can produce several symptoms depending on the person. Frequently, these are gastrointestinal symptoms like constipation and bloating. However, aside from gut symptoms, food sensitivities can cause joint, skin, and brain symptoms, to name just a few. […] Delayed reactions to certain foods can include fatigue, skin rashes, brain fog, joint pain, and headaches. More surprising symptoms can consist of bumps on the back of the arm or dark circles under the eyes. […] Gastrointestinal symptoms like bloating, diarrhea, abdominal cramping, and constipation can be related to food sensitivity. Food sensitivities are a known cause of leaky gut or intestinal permeability. […] Whether you have arthritis or the autoimmune disorder rheumatoid arthritis (RA), joint pain and an inflammatory response can occur from a food sensitivity.

• #39 Do you suspect you have a food intolerance? Learn your triggers and how to – Regional One Health

  https://www.regionalonehealth.org/blog/2022/04/13/do-you-suspect-you-have-a-food-intolerance-learn-your-triggers-and-how-to-find-relief/

  The most common food intolerance is lactose intolerance, or trouble digesting dairy products. It leads to stomach pain and cramps, bloating, gas and diarrhea. Fructose, a sugar commonly found in fruits; and food additives like preservatives, food coloring and MSG can cause similar issues. […] Intolerance to gluten, a protein in grain and cereal products, also causes digestive issues, but they can be joined by joint pain, brain fog, headaches and fatigue. […] Tracking what you ate, how much, and when symptoms appeared is the best way to identify which foods you have trouble digesting. Then, you can avoid those foods to reduce your symptoms. […] Once you have an idea of what food causes problems, the best thing to do is avoid it or cut back on how much you eat. With food intolerances, the amount you consume impacts the severity of your symptoms. […] Often, you can find alternatives for example, there are many milk, yogurt and cheese products that are lactose-free. There are also supplements you can take that support good digestion.

• #40 Is It A Food Allergy, Food Sensitivity, Food Intolerance Or Celiac Disease? | Henry Ford Health – Detroit, MI

  https://www.henryford.com/blog/2020/11/is-it-a-food-allergy-food-sensitivity-food-intolerance-or-celiac-disease

  What it is: Unlike allergies and sensitivities, a food intolerance does not involve the immune system. Its mostly related to the gastrointestinal tract. Lactose intolerance, or lacking the enzyme to digest lactose, is an example of a food intolerance, along with histamine intolerance and MSG intolerance, says Dr. Barish. Gas, bloating, constipation and diarrhea are common symptoms. […] How long it takes for symptoms to appear: „Symptoms appear soon after eating or drinking whatever food it is youre intolerant to, says Dr. Barish. Its a bit easier to pinpoint than food sensitivities. […] How to treat it: Eliminate the food from your diet. Luckily, if youre lactose intolerant, there are many dairy-free alternatives to choose from, like almond milk, coconut milk and oat milk. Certain dietary supplements and digestive enzymes can also be helpful, Dr. Barish adds.

• #41 The 8 Most Common Food Intolerances

  https://www.healthline.com/nutrition/common-food-intolerances

  Symptoms of lactose intolerance include abdominal pain, bloating, diarrhea, gas, and nausea. […] Symptoms of non-celiac gluten sensitivity are similar to those of celiac disease and include bloating, abdominal pain, diarrhea or constipation, headaches, fatigue, joint pain, skin rash, depression or anxiety, and anemia. […] Symptoms of salicylate intolerance include stuffy nose, sinus infections, nasal and sinus polyps, asthma, diarrhea, gut inflammation (colitis), and hives. […] Symptoms of histamine intolerance include flushing of the skin, headaches, hives, itching, anxiety, stomach cramps, diarrhea, and low blood pressure. […] Symptoms of a FODMAP intolerance include bloating, diarrhea, gas, abdominal pain, and constipation. […] Symptoms of sulfite sensitivity include hives, swelling of the skin, stuffy nose, hypotension, flushing, diarrhea, wheezing, and coughing. […] Symptoms of fructose malabsorption include reflux, gas, diarrhea, nausea, abdominal pain, vomiting, and bloating.

• #42 Allergy vs Intolerance | Allergy UK | National Charity

  https://www.allergyuk.org/about-allergy/allergy-vs-intolerance/

  Some people experience adverse reactions caused by food. Food intolerances can take some time to diagnose. Although not life threatening, food intolerance can and often does, make the sufferer feel extremely unwell and can have a major impact on working and social life. […] The symptoms caused by these reactions are usually gut symptoms, such as bloating, diarrhoea, constipation and IBS, skin problems such as eczema and joint pain. […] Symptoms commonly effect the digestive, skin and respiratory systems. […] Keeping a food and symptoms diary of the food eaten and symptoms experienced can be a useful way to build up patterns and highlight suspected food related reactions and reproducibility. […] The symptoms of lactose intolerance are: Diarrhoea, Bloating, Flatulence (wind), Abdominal pain or discomfort, Infantile colic, And less commonly, it can cause constipation and nausea.

• #43 Food intolerance – Australasian Society of Clinical Immunology and Allergy (ASCIA)

  https://www.allergy.org.au/patients/food-other-adverse-reactions/food-intolerance

  Food intolerances describe a wide range of adverse reactions to foods. […] Symptoms caused by food intolerance can affect the: […] Gut causing bloating, gas/flatulence, irritable bowel syndrome (IBS), diarrhoea, constipation, and stomach pain. […] Nervous system causing headaches, migraines, and fatigue. […] Skin causing rashes, eczema, hives (urticaria), swellings, and mouth ulcers. […] Airways causing an itchy, runny nose and increased mucus in the sinuses. […] Lactose intolerance is an enzyme deficiency where people dont have enough lactase enzyme to break down lactose in their diet. These people can get bloating, gas/flatulence, stomach upset, and diarrhoea after having dairy products. […] Non-coeliac gluten intolerance is a recently recognised condition which can cause symptoms such as abdominal disturbance (usually bloating but sometimes other symptoms as well), and occasionally discomfort and tiredness.

• #44 Food allergy – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/food-allergy/symptoms-causes/syc-20355095

  Emergency treatment is critical for anaphylaxis. Untreated, anaphylaxis can be fatal. […] A food intolerance or a reaction to another substance you ate may cause the same symptoms as a food allergy does such as nausea, vomiting, cramping and diarrhea. […] Depending on the type of food intolerance you have, you may be able to eat small amounts of problem foods without a reaction. By contrast, if you have a true food allergy, even a tiny amount of the food may trigger an allergic reaction. […] Common conditions that can cause symptoms mistaken for a food allergy include: Absence of an enzyme needed to fully digest a food. […] Celiac disease. While celiac disease is sometimes referred to as a gluten allergy, it does not result in anaphylaxis. […] This ongoing digestive condition is triggered by eating gluten, a protein found in bread, pasta, cookies and many other foods containing wheat, barley or rye. […] If you have celiac disease and eat foods containing gluten, an immune reaction happens that causes damage to the surface of your small intestine. This leads to an inability to absorb certain nutrients.

• #45 The 8 Most Common Food Intolerances

  https://www.healthline.com/nutrition/common-food-intolerances

  Symptoms of lactose intolerance include abdominal pain, bloating, diarrhea, gas, and nausea. […] Symptoms of non-celiac gluten sensitivity are similar to those of celiac disease and include bloating, abdominal pain, diarrhea or constipation, headaches, fatigue, joint pain, skin rash, depression or anxiety, and anemia. […] Symptoms of salicylate intolerance include stuffy nose, sinus infections, nasal and sinus polyps, asthma, diarrhea, gut inflammation (colitis), and hives. […] Symptoms of histamine intolerance include flushing of the skin, headaches, hives, itching, anxiety, stomach cramps, diarrhea, and low blood pressure. […] Symptoms of a FODMAP intolerance include bloating, diarrhea, gas, abdominal pain, and constipation. […] Symptoms of sulfite sensitivity include hives, swelling of the skin, stuffy nose, hypotension, flushing, diarrhea, wheezing, and coughing. […] Symptoms of fructose malabsorption include reflux, gas, diarrhea, nausea, abdominal pain, vomiting, and bloating.

• #46 Allergy vs Intolerance | Allergy UK | National Charity

  https://www.allergyuk.org/about-allergy/allergy-vs-intolerance/

  Patients commonly report a mixture of symptoms in response to eating wheat which include: Abdominal pain, Altered bowel habit, Bloating, Nausea, Reflux. […] Coeliac disease can also cause more general symptoms, including: tiredness (fatigue) as a result of not getting enough nutrients from food (malnutrition), unintentional weight loss, an itchy rash, problems getting pregnant (infertility), disorders that affect co-ordination, balance and speech (ataxia). […] Elimination diets involve removing the suspected food from the diet for a set time to see if this helps improve any symptoms.

• #47 The Differential Diagnosis of Food Intolerance

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2695393/

  Depending on the patients medical history, a functional or structural cause of the food intolerance will be suspected. […] In many cases, intolerances or food intolerances only develop during the course of the various underlying and concomitant diseases. Some individuals with chronic inflammatory bowel disease, for example, develop meteorism, flatulence, and diarrhea after ingesting milk because of lactase deficiency. […] These intolerances should be identified at an early stage since they aggravate the disease course and complicate dietary management and hence considerably compromise quality of life. […] The symptoms of histamine intolerance are highly variable and affect almost all organs. These range from typical cutaneous effects of histamine (erythema, pruritus, flush, urticaria), gastrointestinal complaints (flatulence, colics, diarrhea), respiratory complaints (nasal obstruction, rhinorrhea, asthma attacks), cardiac complications (hypo- and hypertension, arrhythmias) to headache or dysmenorrhea. […] The classical symptoms of salicylate intolerance are respiratory complaints (blocked or runny nose, sinusitis, nasal polyposis, bronchial asthma), but can also lead to gastrointestinal complaints with meteorism, flatulence, diarrhea and, rarely, to colitis with strictures and ulcers.

• #48 The 8 Most Common Food Intolerances

  https://www.healthline.com/nutrition/common-food-intolerances

  Symptoms of lactose intolerance include abdominal pain, bloating, diarrhea, gas, and nausea. […] Symptoms of non-celiac gluten sensitivity are similar to those of celiac disease and include bloating, abdominal pain, diarrhea or constipation, headaches, fatigue, joint pain, skin rash, depression or anxiety, and anemia. […] Symptoms of salicylate intolerance include stuffy nose, sinus infections, nasal and sinus polyps, asthma, diarrhea, gut inflammation (colitis), and hives. […] Symptoms of histamine intolerance include flushing of the skin, headaches, hives, itching, anxiety, stomach cramps, diarrhea, and low blood pressure. […] Symptoms of a FODMAP intolerance include bloating, diarrhea, gas, abdominal pain, and constipation. […] Symptoms of sulfite sensitivity include hives, swelling of the skin, stuffy nose, hypotension, flushing, diarrhea, wheezing, and coughing. […] Symptoms of fructose malabsorption include reflux, gas, diarrhea, nausea, abdominal pain, vomiting, and bloating.

• #49

  https://uk.checkmybodyhealth.com/blogs/intolerances-allergies/how-long-after-eating-does-a-food-intolerance-show?srsltid=AfmBOoov7UAAngu5smLAHjunN-UZTG0xTrhW8bR5_F2Xr270_qPyqhN2

  Symptoms can range from headaches, flushing, and hives to digestive issues and nasal congestion, often appearing within minutes to a few hours. […] Symptoms like bloating, gas, stomach pain, and changes in bowel habits often appear several hours after eating high-FODMAP foods, sometimes taking up to a day to fully develop. […] These symptoms can appear hours or days after consuming gluten. […] The exact timing of your symptoms can vary depending on your individual sensitivity, the amount of trigger food consumed, and other factors. […] Food intolerance symptoms can be a frustrating puzzle to solve. Their varying timelines, ranging from minutes to days after eating, often make it difficult to pinpoint the exact culprits.

• #50 Food Intolerance or Food Allergy? How to Spot the Symptoms and Get Help | Mount Sinai Today

  https://health.mountsinai.org/blog/food-intolerance-or-food-allergy-how-to-spot-the-symptoms-and-get-help/

  Unlike food allergies, food intolerances do not involve the immune system, do not cause allergic reactions, and are not life threatening. […] Those with food intolerances may even be able to acclimate themselves to these foods by eating small amounts over time, whereas those with food allergies cannot have even the smallest amount without a reaction. […] If you have an intolerance triggered by a FODMAP, going on a supervised food elimination diet, or low FODMAP diet, can help you identify the foods behind the intolerance.

• #51 Food allergy or food intolerance? A Q&A for parents – UChicago Medicine

  https://www.uchicagomedicine.org/forefront/gastrointestinal-articles/2023/january/food-allergies-vs-food-intolerance

  This means that microbes can cross the intestinal barrier and interact with the immune system, triggering a mild inflammatory reaction along with symptoms like abdominal pain, diarrhea and bloating. […] Food intolerances are much harder to diagnose. […] Usually, that means reviewing your child’s diet, removing suspect foods for two weeks, then reevaluating their symptoms. […] Most food intolerances involve dietary eliminations or reductions to improve symptoms.

• #52 The 8 Most Common Food Intolerances

  https://www.healthline.com/nutrition/common-food-intolerances

  Symptoms of lactose intolerance include abdominal pain, bloating, diarrhea, gas, and nausea. […] Symptoms of non-celiac gluten sensitivity are similar to those of celiac disease and include bloating, abdominal pain, diarrhea or constipation, headaches, fatigue, joint pain, skin rash, depression or anxiety, and anemia. […] Symptoms of salicylate intolerance include stuffy nose, sinus infections, nasal and sinus polyps, asthma, diarrhea, gut inflammation (colitis), and hives. […] Symptoms of histamine intolerance include flushing of the skin, headaches, hives, itching, anxiety, stomach cramps, diarrhea, and low blood pressure. […] Symptoms of a FODMAP intolerance include bloating, diarrhea, gas, abdominal pain, and constipation. […] Symptoms of sulfite sensitivity include hives, swelling of the skin, stuffy nose, hypotension, flushing, diarrhea, wheezing, and coughing. […] Symptoms of fructose malabsorption include reflux, gas, diarrhea, nausea, abdominal pain, vomiting, and bloating.

• #53 The Differential Diagnosis of Food Intolerance

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2695393/

  Depending on the patients medical history, a functional or structural cause of the food intolerance will be suspected. […] In many cases, intolerances or food intolerances only develop during the course of the various underlying and concomitant diseases. Some individuals with chronic inflammatory bowel disease, for example, develop meteorism, flatulence, and diarrhea after ingesting milk because of lactase deficiency. […] These intolerances should be identified at an early stage since they aggravate the disease course and complicate dietary management and hence considerably compromise quality of life. […] The symptoms of histamine intolerance are highly variable and affect almost all organs. These range from typical cutaneous effects of histamine (erythema, pruritus, flush, urticaria), gastrointestinal complaints (flatulence, colics, diarrhea), respiratory complaints (nasal obstruction, rhinorrhea, asthma attacks), cardiac complications (hypo- and hypertension, arrhythmias) to headache or dysmenorrhea. […] The classical symptoms of salicylate intolerance are respiratory complaints (blocked or runny nose, sinusitis, nasal polyposis, bronchial asthma), but can also lead to gastrointestinal complaints with meteorism, flatulence, diarrhea and, rarely, to colitis with strictures and ulcers.

• #54 The 8 Most Common Food Intolerances

  https://www.healthline.com/nutrition/common-food-intolerances

  Symptoms of lactose intolerance include abdominal pain, bloating, diarrhea, gas, and nausea. […] Symptoms of non-celiac gluten sensitivity are similar to those of celiac disease and include bloating, abdominal pain, diarrhea or constipation, headaches, fatigue, joint pain, skin rash, depression or anxiety, and anemia. […] Symptoms of salicylate intolerance include stuffy nose, sinus infections, nasal and sinus polyps, asthma, diarrhea, gut inflammation (colitis), and hives. […] Symptoms of histamine intolerance include flushing of the skin, headaches, hives, itching, anxiety, stomach cramps, diarrhea, and low blood pressure. […] Symptoms of a FODMAP intolerance include bloating, diarrhea, gas, abdominal pain, and constipation. […] Symptoms of sulfite sensitivity include hives, swelling of the skin, stuffy nose, hypotension, flushing, diarrhea, wheezing, and coughing. […] Symptoms of fructose malabsorption include reflux, gas, diarrhea, nausea, abdominal pain, vomiting, and bloating.

• #55 Food intolerance | Healthy Eating Advisory Service

  https://heas.health.vic.gov.au/resources/allergies-intolerances/food-intolerance/

  Children with fructose intolerance can suffer diarrhoea, wind, bloating and abdominal pain. […] Sorbitol is also found in excessive amounts in fruit (especially apricots, nectarines, plums, blackberries, apples and pears) and sugar free gums and lollies. It can cause similar symptoms to fructose malabsorption. […] Some food intolerance symptoms are associated with food additives (colours, preservatives, antioxidants and flavour enhancers) and natural food chemicals. These symptoms can include headaches, hyperactive behaviour, mood swings, anxiety, depression, panic attacks, difficulty concentrating, fatigue, learning difficulties, toileting challenges and joint pain among others.

• #56 The 8 Most Common Food Intolerances

  https://www.healthline.com/nutrition/common-food-intolerances

  Symptoms of lactose intolerance include abdominal pain, bloating, diarrhea, gas, and nausea. […] Symptoms of non-celiac gluten sensitivity are similar to those of celiac disease and include bloating, abdominal pain, diarrhea or constipation, headaches, fatigue, joint pain, skin rash, depression or anxiety, and anemia. […] Symptoms of salicylate intolerance include stuffy nose, sinus infections, nasal and sinus polyps, asthma, diarrhea, gut inflammation (colitis), and hives. […] Symptoms of histamine intolerance include flushing of the skin, headaches, hives, itching, anxiety, stomach cramps, diarrhea, and low blood pressure. […] Symptoms of a FODMAP intolerance include bloating, diarrhea, gas, abdominal pain, and constipation. […] Symptoms of sulfite sensitivity include hives, swelling of the skin, stuffy nose, hypotension, flushing, diarrhea, wheezing, and coughing. […] Symptoms of fructose malabsorption include reflux, gas, diarrhea, nausea, abdominal pain, vomiting, and bloating.

• #57 Food intolerance

  https://www.nhs.uk/conditions/food-intolerance/

  A food intolerance is when you have difficulty digesting certain foods or ingredients in food. It’s not usually serious, but eating the food you’re intolerant to can make you feel unwell. […] If you have a food intolerance, you usually get symptoms a few hours after eating the food or ingredient you’re intolerant to. Common symptoms include: diarrhoea, bloating, farting, tummy pain. But there are lots of other possible symptoms, including headache, feeling tired or exhausted, feeling sick, constipation, joint pain or rashes. Symptoms can last for a few hours or days. […] A food intolerance is caused by your body not being able to digest a certain food or an ingredient in food. […] If you have a food intolerance, try to avoid or reduce eating the food you’re intolerant to, including foods where you’re intolerant to any of the ingredients.

• #58

  https://www.wyndly.com/blogs/learn/how-long-do-food-allergy-symptoms-last?srsltid=AfmBOorbSnc3szhGn2_XtH39Sdzvl0F1A8t8czxOKJBpgKwfNzcRXrXr

  Food intolerance symptoms can vary, typically lasting anywhere from a few hours to several days. Once the offending food is completely eliminated from your body, symptoms should subside. However, the exact timeframe can depend on individual digestion rates and the severity of intolerance. […] The duration of food allergy symptoms can range from a few hours to several days, depending on the severity of the reaction and the individual’s immune response. While some people may experience immediate relief after the allergen has been eliminated from their system, others may have symptoms linger for a longer period. […] If symptoms persist for more than a day or two, or if they are severe, it’s important to seek medical attention. Chronic symptoms might indicate a more serious condition, such as a food intolerance or an underlying gastrointestinal disorder.

• #59

  https://uk.checkmybodyhealth.com/blogs/intolerances-allergies/how-long-after-eating-does-a-food-intolerance-show?srsltid=AfmBOoov7UAAngu5smLAHjunN-UZTG0xTrhW8bR5_F2Xr270_qPyqhN2

  Symptoms can range from headaches, flushing, and hives to digestive issues and nasal congestion, often appearing within minutes to a few hours. […] Symptoms like bloating, gas, stomach pain, and changes in bowel habits often appear several hours after eating high-FODMAP foods, sometimes taking up to a day to fully develop. […] These symptoms can appear hours or days after consuming gluten. […] The exact timing of your symptoms can vary depending on your individual sensitivity, the amount of trigger food consumed, and other factors. […] Food intolerance symptoms can be a frustrating puzzle to solve. Their varying timelines, ranging from minutes to days after eating, often make it difficult to pinpoint the exact culprits.

• #60 Identifying Food Intolerance Symptoms | Lifelab Testing

  https://lifelabtesting.com/blog/identifying-food-intolerance-symptoms/

  Food intolerance happens when your digestive system is sensitive to certain foods and cant tolerate them. Food intolerances affect around 15-20% of the population. The severity of food intolerance symptoms varies from one person to the other. When it comes to food intolerance, the amount of food that one consumes determines the severity of the symptoms. Symptoms of food intolerance take a while to emerge. It may take several hours to occur after eating the food and may last up to several days or hours. […] Most of the time, after youve eaten the offending food, it can take between a few hours for the symptoms to set in. but in other cases, the symptoms may take up to a few days to show. It gets hard to pinpoint the offending food since youd have eaten various meals in such cases. It is important to note that food intolerance symptoms can be delayed for up to 48 hours. […] When you consume a food that your digestive system is sensitive toward, the symptoms will take some time to pass. These symptoms will pass when the food youre sensitive to is out of your system.

• #61 Food Intolerance | Allergy UK | National Charity

  https://www.allergyuk.org/resources/food-intolerance/

  Food intolerances can take some time to diagnose. Although not life threatening, food intolerance can and often does, make the sufferer feel extremely unwell and can have a major impact on working and social life. […] Symptoms of food intolerance There are many possible symptoms that could be caused by having an intolerance to food. Depending on the type of food that is suspected depends on the possible range of symptoms. These symptoms may also be experienced in other conditions in the absence of food being a problem so should always be discussed with a health professional. Symptoms commonly effect the digestive, skin and respiratory systems. […] Skin symptoms may include flushing of the skin, urticaria (raised red, itchy rash), eczema flares or angioedema (deep swelling of the tissue). Digestive symptoms can include abdominal pain, diarrhoea, bloating, stomach cramps, and constipation. The respiratory (breathing) system can also be affected rhinitis, breathing difficulties and a wheeze. Other symptoms include headaches and palpitations.

• #62 Allergy vs Intolerance | Allergy UK | National Charity

  https://www.allergyuk.org/about-allergy/allergy-vs-intolerance/

  Some people experience adverse reactions caused by food. Food intolerances can take some time to diagnose. Although not life threatening, food intolerance can and often does, make the sufferer feel extremely unwell and can have a major impact on working and social life. […] The symptoms caused by these reactions are usually gut symptoms, such as bloating, diarrhoea, constipation and IBS, skin problems such as eczema and joint pain. […] Symptoms commonly effect the digestive, skin and respiratory systems. […] Keeping a food and symptoms diary of the food eaten and symptoms experienced can be a useful way to build up patterns and highlight suspected food related reactions and reproducibility. […] The symptoms of lactose intolerance are: Diarrhoea, Bloating, Flatulence (wind), Abdominal pain or discomfort, Infantile colic, And less commonly, it can cause constipation and nausea.

• #63 Food intolerance – Wikipedia

  https://en.wikipedia.org/wiki/Food_intolerance

  Diagnosis of food intolerance can include hydrogen breath testing for lactose intolerance and fructose malabsorption, professionally supervised elimination diets, and ELISA testing for IgG-mediated immune responses to specific foods. […] Non-IgE-mediated intolerance is more chronic, less acute, less obvious in its clinical presentation, and often more difficult to diagnose than allergy, as skin tests and standard immunological studies are not helpful. […] The prognosis of children diagnosed with intolerance to milk is good: patients respond to diet which excludes cow’s milk protein and the majority of patients succeed in forming tolerance. […] A study has demonstrated that identifying and appropriately addressing food sensitivity in IBS patients not previously responding to standard therapy results in a sustained clinical improvement and increased overall well-being and quality of life.

• #64 How to Identify and Manage Food Intolerance Symptoms — Kam Sokhi – Allergy Chef

  https://kamsokhi.com/food-allergy-blog/food-intolerance-symptoms

  Food intolerance doesn’t just affect your stomach; it can also create symptoms in other areas of your body. These non-digestive signs are often overlooked but can be just as disruptive: migraines or headaches, fatigue, skin issues, and joint pain. […] Unlike allergies, food intolerance symptoms don’t usually show up straight away. They can take hours or even days to fully appear, which complicates identifying the offending food. […] Consistently eating foods you’re intolerant to can cause unpleasant symptoms like digestive issues, fatigue, and potentially lead to longer-term health problems. Common symptoms include digestive issues such as bloating, gas, diarrhoea, abdominal pain, nausea, and vomiting, as well as other symptoms like fatigue, headaches, migraines, skin rashes, and joint pain.

• #65 Food allergy – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/food-allergy/symptoms-causes/syc-20355095

  Emergency treatment is critical for anaphylaxis. Untreated, anaphylaxis can be fatal. […] A food intolerance or a reaction to another substance you ate may cause the same symptoms as a food allergy does such as nausea, vomiting, cramping and diarrhea. […] Depending on the type of food intolerance you have, you may be able to eat small amounts of problem foods without a reaction. By contrast, if you have a true food allergy, even a tiny amount of the food may trigger an allergic reaction. […] Common conditions that can cause symptoms mistaken for a food allergy include: Absence of an enzyme needed to fully digest a food. […] Celiac disease. While celiac disease is sometimes referred to as a gluten allergy, it does not result in anaphylaxis. […] This ongoing digestive condition is triggered by eating gluten, a protein found in bread, pasta, cookies and many other foods containing wheat, barley or rye. […] If you have celiac disease and eat foods containing gluten, an immune reaction happens that causes damage to the surface of your small intestine. This leads to an inability to absorb certain nutrients.

• #66 Food allergy and intolerance | Better Health Channel

  https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/food-allergy-and-intolerance

  Food intolerance occurs when the body has a chemical reaction to eating a particular food or drink. […] The symptoms for mild to moderate food allergy or intolerance may sometimes be similar, but food intolerance does not involve the immune system and does not cause severe allergic reactions (anaphylaxis). […] Food intolerance can be a difficult concept to understand. Sometimes, substances within foods can increase the frequency and severity of migraine headaches, rashes (such as hives) or the stomach upset of irritable bowel. […] Symptoms of food intolerance can include: nervousness, tremor, sweating, palpitations, rapid breathing, headache, migraine, diarrhoea, burning sensations on the skin, tightness across the face and chest, breathing problems asthma-like symptoms, allergy-like reactions.

• #67 Food allergy vs. food intolerance: What’s the difference?

  https://www.mayoclinic.org/diseases-conditions/food-allergy/expert-answers/food-allergy/faq-20058538

  Physical reactions to certain foods are common, but most are caused by a food intolerance rather than a food allergy. A food intolerance can cause some of the same signs and symptoms as a food allergy, so people often confuse the two. […] A true food allergy affects the immune system. Even small amounts of the offending food can trigger a range of symptoms, which can be severe or life-threatening. In contrast, a food intolerance often affects only the digestive system and causes less serious symptoms. […] If you have a food intolerance, you may be able to eat small amounts of the offending food without trouble. You may also be able to prevent a reaction. […] Symptoms often include gastrointestinal issues as well as those unrelated to the digestive system, such as joint pain and headaches. However, people with celiac disease are not at risk of anaphylaxis. […] If you have a food intolerance, your doctor may recommend steps to aid digestion of certain foods or to treat the underlying condition causing your reaction.

• #68 Food intolerance: Causes, types, symptoms, and diagnosis

  https://www.medicalnewstoday.com/articles/263965

  With a food intolerance, the amount of food the person eats relates to the severity of their symptoms. On the other hand, with a food allergy, even a small amount of food can trigger a severe allergic reaction. […] Food intolerances arise when the body cannot properly digest certain foods. Lactose intolerance and gluten intolerance are common types. […] There is currently no cure for food intolerances. The best way to avoid symptoms of a food intolerance is to avoid certain foods or eat them less often and in smaller amounts.

• #69 Food allergy or intolerance? | Healthify

  https://healthify.nz/health-a-z/f/food-allergy-or-intolerance

  Symptoms can include hives, itching, nausea, vomiting (being sick) and diarrhoea (runny poo). In some cases the reaction can be life-threatening (anaphylaxis). […] Symptoms can be vague and can include gastrointestinal problems, or can increase symptoms of existing eczema or asthma. […] Symptoms of intolerance are uncomfortable but not life-threatening. They can sometimes be vague and include a combination of the following: gastrointestinal problems such as bloating, wind, diarrhoea, nausea, indigestion, eczema or asthma getting worse. […] The symptoms can begin straight away or up to 20 hours after you have eaten the food. […] Symptoms of food intolerance are not life-threatening.

• #70 People can have food sensitivities without noticeable symptoms – long-term consumption of food allergens may lead to behavior and mood changes

  https://theconversation.com/people-can-have-food-sensitivities-without-noticeable-symptoms-long-term-consumption-of-food-allergens-may-lead-to-behavior-and-mood-changes-192570

  The prevalence of food allergies is increasing worldwide, approaching an epidemic level in some regions. […] Food allergies, or food hypersensitivities, result from the overreaction of the immune system to typically harmless proteins in food. They can manifest as a spectrum of symptoms, ranging from itching, redness and swelling for milder reactions, to vomiting, diarrhea, difficulty breathing and other potentially life-threatening symptoms for severe reactions. […] But some people who test positive on skin-prick allergy tests with moderate increases in IgE dont notice any allergy-related symptoms when they eat the allergen. This condition is sometimes referred to as asymptomatic sensitization. […] What I and other researchers have found is that food allergens can affect your brain and behavior if youre hypersensitized, even if you dont have typical food allergy symptoms.

• #71 People can have food sensitivities without noticeable symptoms – long-term consumption of food allergens may lead to behavior and mood changes

  https://theconversation.com/people-can-have-food-sensitivities-without-noticeable-symptoms-long-term-consumption-of-food-allergens-may-lead-to-behavior-and-mood-changes-192570

  Several recent studies in people have supported the association between food allergies and various neuropsychiatric disorders, including depression, anxiety, attention-deficit/hyperactivity disorder and autism. […] Interestingly, BLG-sensitized mice showed anxiety-like behavior one day after receiving a large amount of the allergen. Another group of sensitized mice developed depression-like behavior after eating small amounts of allergen for two weeks. […] Food allergens can affect the brain and behavior of seemingly asymptomatic people, making them not so asymptomatic neurologically.

• #72 Food Allergies vs. Food Intolerances: Differentiating Symptoms and Finding Relief – ADH – Windsor Center for Digestive Health

  https://windsordigestivehealth.com/food-allergies-vs-food-intolerances-differentiating-symptoms-and-finding-relief/

  Food intolerances are becoming more common and can cause significant discomfort in those who suffer from them. It is essential to understand the difference between a food allergy and a food intolerance, as they have different symptoms and require different treatment approaches. Food intolerances occur when the digestive system has difficulty breaking down certain foods, leading to uncomfortable symptoms such as bloating, gas, diarrhea, or constipation. […] Identifying an intolerance can be tricky, as symptoms can vary widely and often take longer than those of allergies. […] Here are some common symptoms associated with food intolerances: Digestive issues: These can include bloating, gas, diarrhea, or constipation. Stomach pain: Discomfort or pain in the abdomen is a common symptom. Heartburn: This burning sensation in the chest is often a symptom of food intolerance. Headaches: Some individuals may experience headaches or migraines. Fatigue: Feeling fatigued after meals can be a symptom. Skin problems: Some people may experience skin issues like rashes or eczema. Mood changes: Irritability, nervousness, or sudden mood changes can also be a sign. Runny nose or sneezing: Some individuals may experience these symptoms, particularly with histamine intolerance. Increased heart rate: This can occur particularly with sensitivity to certain foods like caffeine. Brain fog: Difficulty concentrating or confusion can sometimes be associated with food intolerances. […] If you suspect you have a food intolerance, you must seek medical advice for a proper diagnosis and treatment plan.

• #73 Food Intolerance Symptoms | What to expect

  https://www.avogel.co.uk/health/digestive-system/food-intolerance/symptoms/

  Food intolerances are usually caused by the digestive system. If your body is unable to break down certain elements of different food products then a variety of symptoms will appear, such as bloating, nausea, or diarrhoea. […] Food intolerance will, in general, lead to the appearance of symptoms several hours after eating. This is because it takes some time for food to work its way through your digestive system, and in some people it is only after eating large quantities of the problem food that the symptoms become noticeable. […] Intolerance symptoms are not normally serious; however they can be persistent, making you feel generally miserable and lethargic. You will usually experience some form of stomach discomfort, such as abdominal pain, bloating, loose stools or diarrhoea.

• #74 The Differential Diagnosis of Food Intolerance

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2695393/

  Depending on the patients medical history, a functional or structural cause of the food intolerance will be suspected. […] In many cases, intolerances or food intolerances only develop during the course of the various underlying and concomitant diseases. Some individuals with chronic inflammatory bowel disease, for example, develop meteorism, flatulence, and diarrhea after ingesting milk because of lactase deficiency. […] These intolerances should be identified at an early stage since they aggravate the disease course and complicate dietary management and hence considerably compromise quality of life. […] The symptoms of histamine intolerance are highly variable and affect almost all organs. These range from typical cutaneous effects of histamine (erythema, pruritus, flush, urticaria), gastrointestinal complaints (flatulence, colics, diarrhea), respiratory complaints (nasal obstruction, rhinorrhea, asthma attacks), cardiac complications (hypo- and hypertension, arrhythmias) to headache or dysmenorrhea. […] The classical symptoms of salicylate intolerance are respiratory complaints (blocked or runny nose, sinusitis, nasal polyposis, bronchial asthma), but can also lead to gastrointestinal complaints with meteorism, flatulence, diarrhea and, rarely, to colitis with strictures and ulcers.

• #75 Management of Adult Patients with Gastrointestinal Symptoms from Food Hypersensitivity—Narrative Review

  https://pmc.ncbi.nlm.nih.gov/articles/PMC9784954/

  These symptoms are often treated for years as functional gastrointestinal disorders (FGD), such as irritable bowel syndrome (IBS) or gastroesophageal reflux disease, are treated with pharmaceutical agents that alleviate symptoms while the root cause of the problem remains unrecognized. […] The aim of this article is to increase awareness of hypersensitivity to food symptoms, their diagnosis and treatment possibilities in adult patients since this group is rarely suspected of food allergies usually assigned to children. […] Food intolerances are adverse reactions that do not involve the immune system. […] In adults, non-immune-mediated food reactions are more common, often caused by carbohydrate intolerance.

• #76 Food intolerance and food allergy in adults: An overview – UpToDate

  https://www.uptodate.com/contents/food-intolerance-and-food-allergy-in-adults-an-overview

  Food intolerance refers to difficulty digesting or metabolizing a particular food. Food intolerance disorders are a subset of all adverse food reactions and are reported by 15 to 20 percent of the population. Food intolerances are even more common among patients with irritable bowel syndrome and other functional gastrointestinal disorders, with 50 to 80 percent reporting consistent problems with certain foods. […] Clinical features of food intolerances traverse a spectrum of organ systems and vary among different disorders, although most involve prominent gastrointestinal symptoms. Excessive intestinal gas, bloating, abdominal pain, and diarrhea are common symptoms.

• #77 The Surprising Symptoms of Food Sensitivities – Caplan Health Institute

  https://caplanhealthinstitute.com/symptoms-of-food-sensitivities/

  Food triggers can affect the brain, causing inflammation and decreased energy levels. Anxiety, depression, headaches, migraines, and brain fog can all be symptoms triggered by foods. […] A leaky gut can cause an imbalance of the gut microbiome, the part of our gastrointestinal tract that is home to trillions of microorganisms. Our microbiome helps us absorb and use our nutrients and plays a role in how we digest our food. It helps balance our immune systems. Food sensitivities can cause gut inflammation and be a root cause of an imbalanced gut microbiome. […] Those with diabetes may see abnormal spikes in blood sugar when eating foods they are sensitive to, such as vegetables or proteins. This is because blood sugar levels and the immune system can be affected by food sensitivities. […] Nightshade symptoms caused by food sensitivities include: Difficulty walking, Swollen hands, knees, and joints, Weakened grip strength.

• #78 How Food Intolerance Is Treated

  https://www.verywellhealth.com/food-intolerance-treatment-5220117

  An intolerance to a food can cause a variety of uncomfortable symptoms including abdominal pain, bloating, diarrhea, and gas. […] While there is no treatment or cure for food intolerance, modifications to diet can be beneficial. […] Some people will find that during the first few days of the elimination diet, their symptoms worsen. If symptoms continue to get worse beyond the first few days, or if they become severe, talk with your healthcare provider. […] If there has not been an improvement in symptoms in two weeks, extend the diet a further two weeks. If at the end of four weeks there has been no improvement, stop the diet and consult your healthcare provider. […] Over-the-counter remedies are available to treat symptoms like diarrhea or indigestion that may occur due to food intolerance. […] Dealing with the symptoms of food intolerance can be frustrating, but you are not alone. If you are experiencing uncomfortable symptoms, consider reaching out to a healthcare provider.

• #79 How to Identify and Manage Food Intolerance Symptoms — Kam Sokhi – Allergy Chef

  https://kamsokhi.com/food-allergy-blog/food-intolerance-symptoms

  Food intolerances don’t usually appear out of nowhere; they’re the result of changes in your body and how it processes food. While genetic and environmental factors play a big role, other elements like gut health, inflammation, and lifestyle choices can also tip the balance. […] Healing the root cause of your food intolerance is possible. It’s worth pursuing this path and working with a qualified nutritionist or healthcare professional.

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