Niedoczynność tarczycy
Zapobieganie i profilaktyka

Niedoczynność tarczycy jest stanem charakteryzującym się niewystarczającą produkcją hormonów tarczycy, najczęściej spowodowanym niedoborem jodu. Profilaktyka opiera się głównie na zapobieganiu niedoborom jodu poprzez stosowanie jodowanej soli kuchennej oraz spożywanie produktów bogatych w jod, takich jak ryby morskie, produkty mleczne i jaja. Kobiety w ciąży i karmiące piersią wymagają suplementacji jodu w dawce 250 μg/dobę. Należy jednak unikać nadmiernej suplementacji jodu (>100 μg/dobę), która może indukować nadczynność tarczycy. Osoby z grup ryzyka (np. z wywiadem rodzinnym, chorobami autoimmunologicznymi, po radioterapii głowy i szyi, z wolem, czy kobiety po porodzie) powinny podlegać regularnym badaniom przesiewowym funkcji tarczycy, co umożliwia wczesne wykrycie i leczenie niedoczynności, minimalizując ryzyko powikłań.

Niedoczynność tarczycy (Hypothyroidism) – Zapobieganie, Profilaktyka

Niedoczynność tarczycy to stan, w którym gruczoł tarczowy nie produkuje wystarczającej ilości hormonów tarczycy. W większości przypadków nie ma możliwości całkowitego zapobieżenia rozwojowi tej choroby, jednak istnieją pewne działania profilaktyczne, które mogą zmniejszyć ryzyko jej wystąpienia lub złagodzić jej przebieg.123

Zapobieganie niedoborom jodu

Jedynym udokumentowanym sposobem zapobiegania niedoczynności tarczycy jest profilaktyka niedoboru jodu, który jest niezbędnym składnikiem do produkcji hormonów tarczycy.45 Niedobór jodu stanowi istotną przyczynę rozwoju niedoczynności tarczycy w niektórych regionach świata i może być skutecznie zapobiegany poprzez:

  • Stosowanie jodowanej soli kuchennej46
  • Regularne spożywanie produktów bogatych w jod:
    • Ryby morskie
    • Produkty mleczne
    • Jaja
  • W przypadku kobiet w ciąży i karmiących piersią, które mają zwiększone zapotrzebowanie na jod (zalecana dawka 250 μg dziennie), często konieczne jest stosowanie suplementacji56

Należy jednak pamiętać, że nadmiar jodu może być również szkodliwy. Długotrwałe przyjmowanie ponad 100 μg jodu w suplementach może zwiększać ryzyko rozwoju nadczynności tarczycy.47

Grupy ryzyka i badania przesiewowe

Osoby z podwyższonym ryzykiem rozwoju niedoczynności tarczycy powinny rozważyć regularne badania przesiewowe w kierunku funkcji tarczycy.89 Do grup podwyższonego ryzyka należą:

Wczesne wykrycie niedoczynności tarczycy pozwala na szybkie wdrożenie leczenia, co zmniejsza ryzyko wystąpienia powikłań i pomaga utrzymać dobrą jakość życia.111

Czynniki stylu życia mogące zmniejszyć ryzyko

Chociaż nie ma jednoznacznych dowodów na to, że styl życia może zapobiec rozwojowi niedoczynności tarczycy, niektóre czynniki mogą potencjalnie zmniejszyć ryzyko jej wystąpienia lub złagodzić jej objawy:129

  • Zaprzestanie palenia tytoniu
  • Stosowanie kołnierza ochronnego podczas badań rentgenowskich głowy i szyi
  • Unikanie ekspozycji na promieniowanie jonizujące
  • Regularna aktywność fizyczna
  • Dbanie o odpowiedni poziom witaminy D
  • Skuteczne zarządzanie stresem poprzez regularne ćwiczenia i techniki relaksacyjne (np. joga, medytacja)12107

Zalecenia żywieniowe

Nie istnieje specjalna dieta, która mogłaby zapobiec niedoczynności tarczycy, jednak odpowiednie odżywianie może wspierać prawidłowe funkcjonowanie tarczycy:1314

  • Zbilansowana dieta zawierająca odpowiednią ilość mikroelementów istotnych dla funkcjonowania tarczycy:
  • Ograniczenie spożycia pokarmów, które mogą zaburzać wchłanianie lewotyroksyny (u osób już leczonych):
    • Produkty zawierające żelazo
    • Produkty bogate w wapń
  • Niektóre osoby z autoimmunologicznym zapaleniem tarczycy (choroba Hashimoto) mogą odczuwać poprawę po wykluczeniu glutenu z diety, nawet jeśli nie mają celiakii1516

Warto podkreślić, że modyfikacje dietetyczne powinny być konsultowane z lekarzem, a przyjmowanie suplementów zawierających jod, selen czy probiotyki wymaga zachowania ostrożności i nadzoru medycznego.17

Postępowanie w ciąży

Kobiety z niedoczynnością tarczycy, które planują ciążę lub są w ciąży, wymagają szczególnej opieki i monitorowania:186

  • Zaleca się konsultację z endokrynologiem przed planowaną ciążą
  • Konieczne jest regularne monitorowanie stężenia TSH w ciąży
  • Często wymagana jest modyfikacja dawki lewotyroksyny pod nadzorem specjalisty
  • Zalecana jest suplementacja jodu (po konsultacji z lekarzem)

Właściwe leczenie niedoczynności tarczycy w ciąży pomaga zapobiec powikłaniom zarówno u matki, jak i u dziecka, w tym niedoczynności tarczycy u noworodka.1819

Postępowanie w subklinicznej niedoczynności tarczycy

Subkliniczna niedoczynność tarczycy (z podwyższonym TSH, ale prawidłowymi poziomami hormonów tarczycy) może w niektórych przypadkach ustąpić samoistnie. Około 50% przypadków wraca do normy w ciągu 1-2 lat. Jednak około 25% może rozwinąć się w jawną niedoczynność tarczycy.7

Osoby z subkliniczną niedoczynnością tarczycy powinny zwrócić szczególną uwagę na modyfikowalnie czynniki ryzyka chorób sercowo-naczyniowych:7

  • Kontrola poziomu glukozy we krwi (szczególnie u osób z cukrzycą)
  • Zaprzestanie palenia tytoniu
  • Zdrowa dieta bogata w składniki odżywcze
  • Odpowiednia ilość snu
  • Ograniczenie spożycia alkoholu
  • Utrzymanie prawidłowej masy ciała
  • Regularna aktywność fizyczna
  • Techniki redukcji stresu

Edukacja i świadomość

Podnoszenie świadomości na temat niedoczynności tarczycy jest ważnym elementem profilaktyki:2021

  • Informowanie członków rodziny o chorobie tarczycy i zachęcanie ich do regularnych badań TSH (ze względu na genetyczne uwarunkowania)
  • Informowanie nowych lekarzy o diagnozie niedoczynności tarczycy
  • Obserwowanie własnego organizmu pod kątem objawów zaburzeń czynności tarczycy
  • Regularne przyjmowanie zaleconych leków i utrzymywanie stężenia TSH w zakresie zalecanym przez lekarza2022

Kluczowe aspekty profilaktyki

Chociaż w większości przypadków nie można zapobiec niedoczynności tarczycy, można podjąć działania zmniejszające ryzyko jej wystąpienia i progresji:239

  • Zapewnienie odpowiedniej ilości jodu w diecie (szczególnie w regionach z niedoborem jodu)
  • Regularne badania kontrolne u osób z grup ryzyka
  • Zdrowy styl życia wspierający ogólne funkcjonowanie organizmu
  • Wczesne rozpoznanie i leczenie zaburzeń czynności tarczycy
  • Ograniczenie ekspozycji na czynniki środowiskowe mogące uszkadzać tarczycę
  • Szczególna opieka nad kobietami w ciąży i noworodkami w kierunku rozpoznania niedoczynności tarczycy24

Niedoczynność tarczycy, chociaż często nie jest możliwa do zapobieżenia, przy odpowiednim leczeniu i monitorowaniu nie powinna prowadzić do skrócenia długości życia ani poważnego pogorszenia jego jakości.20 Kluczowe znaczenie ma właściwe leczenie hormonalne pod nadzorem lekarza oraz regularne badania kontrolne.122

Kolejne rozdziały

Zapraszamy do dalszego czytania naszego leksykonu.

Wybierz kolejny rozdział z menu poniżej, aby otworzyć nową podstronę kompedium wiedzy i uzyskać szczegółowe informację o leku, substancji lub chorobie.

  1. 12.04.2026
  2. www.leksykon.com.pl

Materiały źródłowe

  • #1 Hypothyroidism (Underactive Thyroid): Symptoms & Treatment
    https://my.clevelandclinic.org/health/diseases/12120-hypothyroidism
    You cant prevent hypothyroidism. If you develop symptoms like the ones mentioned above, let your healthcare provider know right away. Early diagnosis and treatment are the best ways to reduce your risk of complications and live a healthy life. […] Currently, theres no cure for hypothyroidism. But you can successfully manage the condition with hormone replacement therapy. […] Without treatment, hypothyroidism can become a serious and life-threatening medical condition.
  • #2
    https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/
    There’s no way of preventing an underactive thyroid. Most cases are caused either by the immune system attacking the thyroid gland and damaging it, or by damage to the thyroid that occurs during some treatments for an overactive thyroid or thyroid cancer. […] If an underactive thyroid is not treated, it can lead to complications, including heart disease, goitre, pregnancy problems and a life-threatening condition called myxoedema coma (although this is very rare).
  • #3 Thyroid Disease: What It Is, Causes, Symptoms & Treatment
    https://my.clevelandclinic.org/health/diseases/8541-thyroid-disease
    Thyroid diseases generally arent preventable. This is because most cases of thyroid disease are linked to genetics and/or caused by autoimmune conditions, which you cant prevent. […] The two conditions you may be able to prevent are thyroid problems related to iodine excess or deficiency. Talk to your healthcare provider if youre concerned about consuming a healthy amount of iodine.
  • #4 Overview: Underactive thyroid (hypothyroidism) – InformedHealth.org – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK279601/
    You can’t prevent a thyroid gland from becoming underactive with one exception: An underactive thyroid caused by iodine deficiency can be prevented by getting enough iodine. Experts recommend that you make sure that you get enough iodine in your diet. You can do this by having milk, dairy products or eggs on a daily basis and eating saltwater fish regularly. The use of iodized table salt is also recommended. […] Some dietary supplements have iodine in them too. Taking them on a daily basis can cause problems if the supplements contain more than 100 g (micrograms) of iodine. If you take too much iodine over the long term, it increases your risk of developing an overactive thyroid. It is almost impossible to get too much iodine from food and drink, though. One exception is dried algae, especially seaweed and kelp.
  • #5 Hypothyroidism – Wikipedia
    https://en.wikipedia.org/wiki/Hypothyroidism
    Salt iodization has prevented hypothyroidism in many populations. […] Hypothyroidism may be prevented in a population by adding iodine to commonly used foods. This public health measure has eliminated endemic childhood hypothyroidism in countries where it was once common. In addition to promoting the consumption of iodine-rich foods such as dairy and fish, many countries with moderate iodine deficiency have implemented universal salt iodization. […] Pregnant and breastfeeding women, who require 66% more daily iodine than non-pregnant women, may still not be getting enough iodine. The World Health Organization recommends a daily intake of 250 g for pregnant and breastfeeding women. As many women will not achieve this from dietary sources alone, the American Thyroid Association recommends a 150 g daily supplement by mouth.
  • #6 Hypothyroidism (underactive thyroid) | healthdirect
    https://www.healthdirect.gov.au/hypothyroidism
    Hypothyroidism (also known as an underactive thyroid) is when your thyroid gland does not make enough thyroid hormone. […] Can hypothyroidism be prevented? […] Most types of hypothyroidism cant be prevented, but the symptoms can be managed. […] You can prevent hypothyroidism caused by iodine deficiency by including iodine in your diet. An easy way to do this is by using iodised salt in cooking, and when adding salt to food. This is available at supermarkets. […] If your hypothyroidism is caused by a medicine, speak to your doctor about changing it. Dont stop any medicines without checking first with your doctor. […] If you are planning a pregnancy, you should take an iodine supplement daily. Speak with your doctor about supplements and medicines that are safe to take while planning a pregnancy.
  • #7 Borderline Hypothyroidism: Symptoms, Treatment and More
    https://www.health.com/condition/thyroid/treatment-for-borderline-underactive-thyroid
    You can’t always prevent borderline hyperthyroidism. Some evidence suggests that getting plenty of iodine in your diet can reduce your risk of the condition. Iodine is a mineral the body needs to create thyroid hormones. […] You can also talk to a healthcare provider or pharmacist about iodine supplements. These supplements are generally safe if you take less than 100 micrograms (g) per day. Taking too much iodine can result in an overactive thyroid. […] It’s possible to prevent hypothyroidism if you have an early, mild form of the condition. About 50% of borderline hypothyroidism have normal TSH levels within one to two years. Nearly 25% of those, in contrast, can progress into hypothyroidism. […] It’s important to make lifestyle changes that support heart health if you have borderline hypothyroidism, including: Control blood sugar levels if you have diabetes, Don’t smoke or quit smoking, Eat a healthy diet that has plenty of nutrients, Get enough sleep, Limit alcohol, Maintain a healthy weight, Stay physically active, Take steps to reduce stress, such as meditation, yoga, or tai chi.
  • #8 Hypothyroidism (underactive thyroid): Symptoms and more
    https://www.medicalnewstoday.com/articles/163729
    There is no way to prevent hypothyroidism. However, some people may be more at risk of developing the condition than others. […] People with the following factors may wish to ask their healthcare professional about checking their thyroid levels: a history of autoimmune disease, previous radiation treatment to the head or neck, a goiter, family history of thyroid problems, use of medications known to affect thyroid function.
  • #9 15 Ways to Reduce Your Risk of Thyroid Disease
    https://www.verywellhealth.com/ways-to-reduce-thyroid-disease-risk-3233225
    While there aren’t any guaranteed ways to avoid thyroid disease, certain lifestyle changes may help reduce your risk. […] You can help prevent thyroid disease by making sure you get enough of this nutrient. […] Studies suggest that probiotics exert beneficial effects on thyroid hormones and thyroid function in general. In theory, this may lessen the risk of thyroid disease in people genetically predisposed to Graves’ disease or Hashimoto’s disease. […] It is important to see your primary care doctor for regular checkups. This is especially true if you’re at risk for developing thyroid disease. […] There are things you can do that may reduce your risk of thyroid disease. These include common sense practices like eating a healthy diet, exercising regularly, quitting cigarettes, and getting plenty of vitamin D. Probiotic and selenium supplements may also help along with a reduction in your intake of sugar, soy, and processed foods. […] While there are no guarantees that these interventions will prevent thyroid disease, it’s important to remember good health is beneficial to the health of your thyroid gland whether you are at risk or not.
  • #10 What You Should Know About Thyroid Disease and Preventive Measures – Hollywood Presbyterian Medical Center
    https://www.hollywoodpresbyterian.com/blog-what-you-should-know-about-thyroid-disease-and-preventive-measures/
    Thyroid disease affects millions of people, especially women. […] Since the causes of thyroid problems are largely unknown and the symptoms are difficult to recognize, it is best to monitor your health and follow a healthy lifestyle that contributes to thyroid health. […] According to the Office on Women’s Health at the U.S. Department of Health and Human Services, women who have experienced a thyroid problem in the past, had a surgery or radiotherapy affecting the thyroid gland, or have a condition such as goiter, anemia, or type 1 diabetes, are the most at risk for thyroid disorders and should speak with their provider about testing. […] Besides testing and medication, lifestyle changes have an impact on thyroid disease symptoms. Some of the preventive measures include: Getting adequate rest. Avoiding stimulants (caffeine, nicotine, and sugar). Removing inflammatory and allergenic foods from your diet such as dairy, gluten, eggs (for some), and goiter-causing foods such as, genetically modified soy, raw kale, and night shade vegetables like bell peppers and tomatoes. A diet filled with warm, cooked, nutrient-dense vegetables and thyroid healthy vitamins such as Vitamin D, Magnesium, Selenium, and Zinc, along with plenty of clean protein from fish, chicken, and/or organ meats, along with complex carbohydrates such as those found in cassava (yucca) or sweet potatoes, has shown evidence of being helpful to thyroid health. Regular exercise is particularly important for those with thyroid diseases as it aids in regulating energy levels and hormonal processing. […] Though thyroid malfunction is prevalent in our country, it can be managed with the right combination of thyroid replacement hormone medication and healthy lifestyle and diet modifications.
  • #11 Hypothyroidism Secondary – Endocrine Surgery | UCLA Health
    https://www.uclahealth.org/medical-services/surgery/endocrine-surgery/patient-resources/patient-education/endocrine-surgery-encyclopedia/hypothyroidism-secondary
    This condition may not be preventable. Awareness of risk may allow early diagnosis and treatment.
  • #12 Prevention of Hypothyroidism| Can I Prevent Hypothyroidism| PatientsEngage
    https://www.patientsengage.com/conditions/hypothyroidism/prevention
    Hypothyroid Prevention There is no clear way to prevent hypothyroidism but you can reduce your risk by doing the following: Quit smoking. Use a neck collar when going in for head and neck X-ray. Have adequate iodine intake. This is especially true in many under-developed countries, where salt is now iodised to reduce this deficiency. Avoid exposure to radioactive iodine. […] Hypothyroid Prevention Prevention of Hypothyroidism There is no clear way to prevent hypothyroidism but you can reduce your risk by doing the following: Quit smoking. Use a neck collar when going in for head and neck X-ray. Have adequate iodine intake. This is especially true in many under-developed countries, where salt is now iodised to reduce this deficiency. Avoid exposure to radioactive iodine. Join our No Smoking Community to learn more
  • #13 Hypothyroidism diet: Can certain foods increase thyroid function?
    https://www.mayoclinic.org/diseases-conditions/hypothyroidism/expert-answers/hypothyroidism-diet/faq-20058554
    Generally, there’s no diet to help with underactive thyroid a condition that’s also called hypothyroidism. […] You may see lots of claims about hypothyroidism diets. But there’s no evidence that eating or avoiding certain foods will help the thyroid work better in people with underactive thyroid. […] Getting enough iodine in the diet is essential for the thyroid to work as it should. […] Eating a balanced diet will keep the thyroid healthy. […] If you have underactive thyroid, take thyroid hormone replacement medicine as directed by your healthcare professional. […] To avoid possible problems, eat these foods or use these products several hours before or after you take your thyroid medicine. […] If you have questions about how to take your thyroid hormone replacement medicine or about your diet, talk with a member of your healthcare team.
  • #14 Best diet for hypothyroidism: Good foods, what to avoid, and meal plan
    https://www.medicalnewstoday.com/articles/324819
    The diet can have a significant impact on hypothyroidism. Some nutrients like selenium and zinc may improve thyroid function, while others may worsen or interfere with hypothyroidism treatments. […] Having hypothyroidism means that the body does not have enough thyroid hormones. While changing the diet cannot cure this, it can help manage the condition. […] Foods that contain certain nutrients, such as iodine, selenium, and zinc, can help maintain healthy thyroid function. […] Some foods may negatively affect thyroid function and worsen symptoms of hypothyroidism. […] Some foods and supplements can interfere with how well the body absorbs thyroid replacement medicine, so limiting these can also help. […] However, it is crucial to avoid consuming too much iodine. This can actually worsen hypothyroidism, and it can also worsen hyperthyroidism, which refers to the body having excess thyroid hormones.
  • #15 5 Natural Remedies for Hypothyroidism
    https://www.healthline.com/health/hypothyroidism/five-natural-remedies-for-hypothyroidism
    If thyroid medication causes side effects, natural remedies may be an option. This may include a selenium-rich, sugar-free, or gluten-free diet, as well as taking vitamin B supplements and probiotics. Its important to talk to your doctor before trying natural remedies. […] In some cases, natural remedies may cause fewer side effects and fit into your overall lifestyle better. However, they should not be considered a replacement for medications. […] Changing your diet and taking an herbal supplement are two ways you can help your thyroid condition. These options may have fewer side effects than taking thyroid medication. […] Also, taking an herbal supplement to help address a low or underactive thyroid may be helpful for people who arent responding well to medications. […] Consider the following five natural remedies as additions to your treatment plan.
  • #16 Best diet for hypothyroidism: Good foods, what to avoid, and meal plan
    https://www.medicalnewstoday.com/articles/324819
    Certain nutrients can interfere with thyroid health. While foods rich in these nutrients are not off-limits, restricting the intake of these foods may help a person manage their hypothyroidism. […] Research also suggests that removing gluten from the diet improves thyroid function in people with Hashimotos who do not have celiac disease. […] Treating celiac disease involves switching to a gluten-free diet. People with autoimmune-related hypothyroidism might try going gluten-free to see whether their symptoms improve. […] Reducing the intake of ultra-processed foods and added sugars may help improve symptoms, manage weight, and boost overall well-being. […] It is important to take thyroid medication on an empty stomach so that the body can absorb it fully. […] People should not take this medication within 4 hours of eating foods that contain iron or calcium. […] Overall, it is important to aim for a healthy diet that supports the absorption of thyroid medication and helps with maintaining a healthy weight.
  • #17 5 Natural Remedies for Hypothyroidism
    https://www.healthline.com/health/hypothyroidism/five-natural-remedies-for-hypothyroidism
    Its important to talk with your doctor about how much selenium may be right for you since every person is different. […] Its not easy to adopt a sugar-free diet, but the benefit to your thyroid health may be worth it. […] Talk with your doctor about how much vitamin B-12 may be right for you. […] However, the Food and Drug Administration hasnt approved the use of probiotics for the prevention or treatment of any condition. Talk with your doctor to see if these supplements might help you. […] Research doesnt currently support a gluten-free diet for the treatment of thyroid disease. […] However, many people with Hashimotos thyroiditis and hypothyroidism do feel better after removing wheat and other gluten-containing foods from their diet. […] As always, you should discuss any treatment plans with your doctor before starting them.
  • #18 Underactive thyroid | NHS inform
    https://www.nhsinform.scot/illnesses-and-conditions/glands/underactive-thyroid/
    Theres no way of preventing an underactive thyroid. Most cases are caused either by the immune system attacking the thyroid gland and damaging it, or by damage to the thyroid that occurs during some treatments for an overactive thyroid or thyroid cancer. […] These problems can usually be avoided with treatment under the guidance of a specialist in hormone disorders (an endocrinologist). Therefore, tell your GP if you have an underactive thyroid and youre pregnant or trying to get pregnant.
  • #19 Hypothyroidism in Horses: Causes, Diagnosis & Treatment | Mad Barn
    https://madbarn.com/hypothyroidism-in-horses/?srsltid=AfmBOorwquGfFM7pqmKj46fEcDw_keT780-UrZA8Aqc9cHzY2zCs3Dff
    Providing pregnant mares with optimal iodine intake and balanced nutrition during gestation is essential for preventing neonatal hypothyroidism. […] Ensuring adult horses have an adequate iodine intake can help to prevent the development of hypothyroidism due to deficiency. […] Horses with endocrine disturbances including EMS and PPID require treatment to help prevent the condition.
  • #20 Hypothyroidism | American Thyroid Association
    https://www.thyroid.org/hypothyroidism/
    KEEPING OTHER PEOPLE INFORMED […] Tell your family members. Because thyroid disease runs in families, you should explain your hypothyroidism to your relatives and encourage them to get periodic TSH tests. […] If you start seeing a new doctor, tell the doctor that you have hypothyroidism and you need your TSH tested every year. […] You have to make a lifetime commitment to treatment. But if you take your pills every day and work with your doctor to get and keep your thyroxine dose right, you should be able to keep your hypothyroidism well controlled throughout your life. […] If you keep your hypothyroidism well-controlled, it will not shorten your life span.
  • #21 8 Proactive Steps To Maintaining a Healthy Thyroid and Preventing Complications | Inspira Health
    https://www.inspirahealthnetwork.org/news/healthy-living/8-proactive-steps-maintaining-healthy-thyroid-and-preventing-complications
    Preventive measures like proper nutrition, lifestyle choices, stress management, and regular check-ups can help reduce your risk of thyroid disorders and support optimal thyroid function for a healthier life. […] If you notice any symptoms of thyroid dysfunction such as fatigue, weight changes or mood swings, consult your health care provider, said Inspira provider. […] Maintaining a healthy thyroid through lifestyle choices, diet, stress management, and regular check-ups is essential for optimal well-being and metabolic balance as well as preventing thyroid disorders.
  • #22 Underactive thyroid: Study validates treatment guidelines • healthcare-in-europe.com
    https://healthcare-in-europe.com/en/news/underactive-thyroid-study-validates-treatment-guidelines.html
    There’s no way of preventing an underactive thyroid and most cases are caused either by the immune system attacking the thyroid gland and damaging it, or by damage to the thyroid that occurs during some treatments for an overactive thyroid or thyroid cancer. […] The findings support flexibility in treatment dosing for patients with hypothyroidism, but clinicians and patients should recognise the importance of maintaining thyroid stimulating hormone concentration within the recommended range in order to avoid adverse health outcomes.
  • #23 What Is Hypothyroidism? Symptoms, Causes, Diagnosis, Treatment, and Prevention
    https://www.everydayhealth.com/hypothyroidism/guide/
    You cant prevent hypothyroidism. While some risk factors may contribute to the development of this thyroid condition (including pituitary disorders, iodine deficiencies, congenital disease, and pregnancy), hypothyroidism is most often caused by factors out of your control. […] Instead, its more important to be aware of the signs of hypothyroidism and to see your doctor if you suspect any of your symptoms could be related.
  • #24 Hypothyroidism (Underactive Thyroid) Symptoms & Treatments | Ada
    https://ada.com/conditions/hypothyroidism/
    Avoiding radiation to the thyroid, and taking plenty of iodine in the diet can help to prevent some cases of hypothyroidism. […] In many countries, pregnant women and newborns are screened (tested without symptoms) for hypothyroidism. This allows early treatment and helps to prevent the consequences of undiagnosed hypothyroidism before birth and in childhood.