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Forbidden foods for hypothyroidism

by Alivia Nyhan
Published: Last Updated on

Some diseases require a special diet which must be included, and in other cases, some foods must be excluded. Hypothyroidism is an alteration of the thyroid gland, which consists of a decrease in its function, directly affecting metabolism. Consequently, hypothyroidism causes changes and modifications in the body that require changes in diet to reverse them.

These transformations must be carried out under the supervision of trained and trained personnel, as is the case of nutritionists, who will provide the necessary information on which foods should be eliminated from the daily diet of people who suffer from this. Disease. In FastlyHeal, you will know the prohibited foods for hypothyroidism to prevent and improve the symptoms of this alteration of the thyroid gland.

What is hypothyroidism?

Hypothyroidism is the decrease in the regular activity of the thyroid gland, resulting in a slow metabolism due to the reduction in the production of thyroid hormone.

The latter is responsible for producing two hormones, T3, Triiodothyronine, and T4, called Thyroxine. Both control cell metabolism; this has to do with the use of energy by cells.

Hypothyroidism is a frequent alteration in women, as they are exposed to hormonal changes throughout their lives. According to the World Health Organization (WHO), this can appear at any age, although the disease becomes more frequent from 40 years or during pregnancy [1].

The changes produced in the metabolism product of the alteration of the production of the hormone can have repercussions in the people presenting an increase and decrease in weight suddenly and unexpectedly.

Causes of hypothyroidism

Knowing the causes that give rise to hypothyroidism will help with the treatment and the foods that will be beneficial during therapy.

The most common causes of hypothyroidism are:

  • Genetic causes, presence of congenital disabilities.
  • Chronic iodine deficiency in the diet.
  • Application of radiotherapy to fight cancer, especially at the neck level.
  • Treatments with lithium which is used in manic depressive psychosis disorders.
  • Removal of the gland due to a total or partial surgical intervention.
  • Antithyroid drugs, among which are Metimazole, Carbimazole, or Propylthiouracil. These medications can stop thyroid hormone production causing hypothyroidism.

Once the causes capable of triggering said alteration are known, it will be much easier to understand how we can help in the treatment and which foods should be eliminated for the benefit of the patient with this alteration.

Forbidden foods for hypothyroidism

Contraindicated foods are called goitrogens since they interfere with the average thyroid hormone production once assimilated by the body. These foods prevent the absorption of iodine (mineral required to activate the metabolism). Additionally, these foods will prevent obesity, one of the symptoms of this disease. This group of foods is made up of:


Cauliflower, broccoli, kale, purple, arugula, and watercress belong to this group. All the green leaves are related to this family because they contain a goitrogen substance, which prevents iodine absorption. The latter must be guaranteed, and for this, it is essential in the production of thyroid hormone.


Within this group are the processed ones since they have a high content of gluten, which in many cases can make it difficult to absorb the medications used to replace the thyroid hormone. For this reason, its consumption should be avoided. Also, the immune system can identify this protein as an antigen that it has to attack. This group includes cereals such as rye, barley, or processed wheat-based products.


Like all its derivatives, such as milk, cheese, sauce, and soy protein, they contain a phytoestrogen called isophlavin, capable of affecting the functionalism of the thyroid gland. Therefore, it should not be consumed in patients with iodine deficiency.


Some cases of vegetables that can act negatively on the metabolism are:

  • The radish.
  • The raw onion.
  • Spinach leaves.


It is not a general category. For example, some nuts are recommended for hypothyroidism:

  • Avellana.
  • Pistachios
  • Anacortes

On the other hand, the prohibited nuts for hypothyroidism are the following:

  • Peanuts
  • Pinions.
  • Chestnuts
  • Walnuts.

Sweet fruits

Fruits with high sugar content can increase the risk of maintaining high glucose levels, causing alterations in metabolism. Therefore, you should not consume fruits such as:

  • Peaches
  • Pineapple
  • Mangos
  • Strawberries
  • Apples
  • Bananas

Stuffed meats

These meats contain substances known as nitrates and nitrites, the main enemies of the thyroid gland. These substances are capable of generating hypothyroidism in addition to complications in metabolism and the cardiovascular part. Among them are:

  • Sausages
  • Blood sausages
  • Chorizos.

Vegetable oils

Vegetable oils are capable of triggering metabolic disturbances and risks. Consuming this fat can block the function of thyroid hormones, thus preventing their use by the cell.

If you want to control this disease, the idea is to follow the dietary advice suggested by nutrition specialists. Only by eating foods that stimulate your metabolism and help maintain the levels of iodine necessary for the thyroid gland to fulfill the required functions will you be able to keep the production of the said hormone at optimal levels, which is essential to comply with the metabolism of the human body. . Similarly, you should avoid foods rich in iodine.

Do not hesitate to go to your doctor. He will tell you what to do according to your case.

Hypothyroidism: foods to avoid

In summary, the foods that are prohibited for hypothyroidism and that you should avoid are:

  • Cruciferous: like cabbage or broccoli.
  • Cereals.
  • Soy.
  • Vegetables.
  • Nuts.
  • Sweet fruits.
  • Vegetable oils.
  • Processed meats and sausages.

This article is merely informative. At FastlyHeal .com, we do not have the power to prescribe medical treatments or make any diagnosis. We invite you to see a doctor if you present any condition or discomfort.

If you want to read more articles similar to Forbidden foods for hypothyroidism, we recommend that you enter our Endocrine System category.

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