Best Foods for Hypothyroidism: What to Eat and What to Avoid

The thyroid is an endocrine gland that produces hormones involved in regulating metabolism and other body functions. Hypothyroidism occurs when the thyroid does not produce enough thyroid hormones, which may lead to symptoms such as fatigue, weight gain, and low energy.

Managing hypothyroidism involves more than keeping track of symptoms and taking medications. Everyday food choices also play a role in supporting overall health. While there is no single best food for thyroid patients, a balanced, nutrient-rich diet can support overall health and provide essential nutrients important for normal thyroid function.

This guide covers how taking a balanced diet is important for people with thyroid problems and which foods to eat and avoid for thyroid-related issues like hypothyroidism.

Why Does Diet Matter in Hypothyroidism?

The thyroid gland requires certain nutrients to produce thyroid hormones. These include iodine, selenium, zinc, and others. Adequate intake of these nutrients is important for normal thyroid function. However, nutrient deficiencies are not the cause of all cases of hypothyroidism.

For people with hypothyroidism, eating healthy and making conscious dietary choices is very important. A balanced, nutrient-rich diet can provide essential nutrients and support overall health. However, diet alone does not treat every cause of hypothyroidism, and dietary needs can vary between individuals.

Foods to Eat for Hypothyroidism

Taking a healthy diet in hypothyroidism is important. There are certain foods that can provide nutrients involved in normal thyroid function. Incorporating a variety of these food items into an everyday diet can support overall health and well-being.

Here are a few food options that one can include in a thyroid-friendly diet chart:

Foods Containing Iodine

The human body needs iodine to produce essential thyroid hormones, thyroxine (T4) and triiodothyronine (T3). Iodine deficiency can cause an enlarged thyroid gland, known as a goiter. The body cannot produce iodine naturally, so people need to obtain it through their everyday diet.

Some common iodine-rich foods include:

• Cheese
• Milk
• Iodized table salt
• Saltwater fish
• Seaweed
• Whole eggs

However, it is also important to ensure that iodine consumption does not get too high. Excessive iodine intake can interfere with thyroid function in some people.

Foods Containing Selenium

Selenium is an essential trace mineral involved in thyroid hormone metabolism and antioxidant functions. Maintaining adequate selenium intake supports normal thyroid function. For people with hypothyroidism, a few food items that are rich in selenium may be very beneficial. These include:

• Brazil nuts
• Tuna
• Shrimp
• Chicken
• Ham
• Eggs
• Oatmeal
• Brown rice

Foods Containing Zinc

Zinc is another essential nutrient involved in several processes related to thyroid hormone metabolism. Consuming foods that contain zinc can help support adequate zinc intake. Such food items include:

• Oysters
• Crab
• Fortified cereals
• Chicken
• Legumes
• Pumpkin seeds
• Yoghurt

Anti-Inflammatory Foods

Hashimoto's disease, an autoimmune inflammatory condition, is one of the most common causes of hypothyroidism. In this condition, the immune system attacks the thyroid gland, which can lead to an underactive thyroid and lower the levels of thyroid hormones.

Taking an anti-inflammatory diet can be very helpful for people with this condition. Common foods that can be included in day-to-day diet are:

• Fatty fish like salmon, mackerel, etc.
• Olive oil
• Fruits like berries, cherries, etc.
• Green leafy vegetables
• Nuts

Foods to Avoid with Hypothyroidism

There are certain nutrients that may interfere with thyroid function health. While foods that contain any such nutrients are not completely off-limits, the intake should be restricted. It may help individuals with hypothyroidism manage their condition and prevent any issues.

These food items include:

Goitrogenic Foods

Goitrogens are compounds that may affect thyroid function in certain circumstances. Green cruciferous vegetables like broccoli, cauliflower, cabbage, and kale contain these compounds. While these are generally good for overall health, regular consumption, particularly of raw cruciferous vegetables should be avoided by individuals with hypothyroidism.

Soy

Soy foods such as tofu, soy milk, and soy-based products might interfere with the production of thyroid hormones (T3 and T4) and lead to various health issues. While they generally do not need to be completely avoided, people with hypothyroidism should consult a healthcare provider regarding the consumption of soy-containing food and supplements.

Processed Foods

Ultra-processed food items and drinks containing high amounts of added sugar may not be ideal as a regular part of a balanced diet. Regular consumption of these foods can contribute to poor overall dietary quality and may make healthy weight management more difficult. For people with hypothyroidism, it is best to reduce intake of ultra-processed foods like instant noodles, cakes, chips, frozen meals, etc.

Important Tests for Thyroid Function

Dietary changes are only one part of thyroid care. Usually, regular monitoring is required to evaluate thyroid function, support diagnosis, and monitor people who are receiving treatment. There are several tests that help healthcare providers understand how well a person’s thyroid gland is working. They can help evaluate conditions like hyperthyroidism, hypothyroidism, Graves’ disease, Hashimoto’s disease and thyroid cancer.

The most common thyroid blood tests are:

• TSH Test: TSH (thyroid-stimulating hormone) is a hormone produced by the pituitary gland that signals the thyroid gland to produce thyroid hormones T3 and T4. This blood test measures the amount of TSH present in the bloodstream.
• Free T3 Test: Triiodothyronine, or T3, is one of the main hormones produced by the thyroid gland. This test measures the amount of free T3 (not bound with protein) in the bloodstream.
• Free T4 Test: This test measures the amount of free thyroxine (T4) (not bound with protein), which (T4) is another hormone produced by the thyroid gland.
• Thyroid Antibody Panel: This is a series of tests that help detect the presence of thyroid antibodies in a person’s body. The presence of certain thyroid antibodies may support the evaluation of an autoimmune condition.
• Calcitonin: This test measures the levels of calcitonin, a hormone produced by the thyroid gland that helps regulate calcium levels in the blood. High levels of this hormone can be a sign of a certain type of thyroid cancer. This test is not a part of routine thyroid function tests and is generally used in specific clinical situations, such as when medullary thyroid cancer is suspected or being monitored.
• Thyroglobulin: This is another thyroid-related blood test that is not performed as a part of a regular thyroid checkup. It is suggested to individuals who have received a treatment for thyroid cancer. It helps check if the cancer has reappeared so that any necessary steps can be taken.

The doctor may recommend any of these blood tests, depending on the age, medical history, symptoms, risk factors, and treatment status of an individual.

Final Thoughts

Hypothyroidism, or underactive thyroid, is a condition that can affect a person’s overall health. However, it is possible to control thyroid levels with a balanced diet and proper medication. There are certain foods which are known to improve thyroid function, while a few food items may hinder it. Having an understanding of which foods to eat and avoid with hypothyroidism is crucial for effective management of this condition.

Apart from diet, regular health monitoring is very important to maintain good thyroid health. Blood tests, such as TSH, T3 & T4, etc., give the healthcare provider an overview of one’s thyroid function. They should be done as a part of a preventive health checkup. At Apollo Diagnostics, you can access a wide range of lab tests, which are available with the facility of online booking and convenient sample collection.

Frequently Asked Questions

Can dietary changes help control thyroid levels?

While following healthy eating habits can be beneficial for people with thyroid-related problems, they should always be combined with an appropriate course of treatment. It is important to consult a doctor to understand what dietary changes are suitable, depending on the medical history.

Which foods should be avoided by people with hypothyroidism?

People with hypothyroidism do not generally need to completely avoid specific foods. However, they should limit consumption of goitrogenic food such as broccoli, cauliflower, cabbage, etc. Apart from this, soy, gluten and ultra-processed foods should also be consumed in moderation or as advised by a healthcare professional.­­­­­

Is iodine good for hypothyroidism?

Yes, iodine is essential for thyroid hormone production and is important for normal thyroid function. However, excessive iodine can interfere with thyroid function in some people, hence it is best to maintain an appropriate intake.

What is the best food for thyroid patients?

There is no single best food for thyroid patients. There are a few food items which are considered good for those with hypothyroidism, while a few things may have a negative impact. One should always consult a professional healthcare provider before making any changes in the diet.