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Foods to avoid if diagnosed with hypothyroidism:

Soy-containing foods: 

According to studies, soy-rich foods can alter and affect the body’s ability to absorb thyroid medication properly. Goitrogens have also been discovered in soy-based food products, which can cause thyroid gland irritation. Goitrogens are a type of compound that causes the thyroid gland to swell (goitre). Consumption of goitrogens can aggravate hypothyroidism. To manage hypothyroidism, people should actively reduce their consumption of soy-based foods. The following foods should be avoided:

  • Soya chunks
  • Tofu
  • Soy milk





Cruciferous vegetables: 

While some vegetables are good for health, certain cruciferous vegetables are high in goitrogens. Avoid eating broccoli, spinach, cabbage and cauliflower if you are diagnosed with thyroid problems 

Fried or fatty foods

Excessively fried food contains fat that can interfere with the body’s ability to absorb thyroid hormone replacement medication. Fats can also impair the thyroid’s ability to produce the hormone thyroxine. Furthermore, fatty foods that are high in calories can be challenging to digest for people who have a slow metabolism. In hypothyroidism, this can lead to excessive weight gain. Excessively fatty foods, such as butter, mayonnaise, margarine, and other fried foods, should be avoided.

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Foods high in fibre

Fibrous foods such as beans, legumes, and vegetables, can cause excessive complications in hypothyroid patients. A high-fibre diet, such as green legumes and whole grains, can interfere with normal digestive system functions and the body’s ability to absorb hypothyroidism medication. As a result, foods like whole green bean legumes should be avoided or reduced.

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Inflammatory food to avoid hypothyroidism 

Several foods are considered inflammatory in Hyperthyroidism. Excessive consumption of these foods can result in thyroid gland inflammation and worsen the condition. 

These include:

  • Some fruits, such as strawberry, peaches, 
  • Starchy food, such as sweet potato and cassava
  • Foods high in sugar or have a high glycemic index: can lead to spiked blood sugar levels and inflammation. 

Nuts to be avoided with hypothyroidism

People who have hypothyroidism should avoid eating a lot of nuts like millets, peanuts, or pine nuts.

Along with these, some more foods to avoid include: 

  • Coffee
  • Canned/packaged food
  • Food that is highly processed
  • Alcohol
  • Green tea
  • Supplements for health

Food to avoid with Hypothyroidism: Summary

Soy rich foods Tofu, soya chunks, soy milk
Cruciferous vegetables Cabbage, spinach, cauliflower
Nuts Pine nuts, pearl millets, peanuts
Caffeine rich products Coffee, black coffee, green tea
Fried/fatty foods Butter, red meat, fried food
Supplements Vitamin or herbal

Dealing with hypothyroidism can be difficult, but the symptoms can be managed with smart eating and a proper diet. 

Foods to avoid of diagnosed with Hyperthyroidism:

Hyperthyroidism is a condition where the body produces too much thyroid hormone. Diet plays a crucial role in producing and using thyroid hormones in the body.

So what are some of the foods that need to be avoided if I have Hyperthyroidism?

Food that contains excess Iodine

Iodine is a central component of the thyroid hormone. Consuming excessive thyroid with your food can cause increased production of thyroid hormone and worsen your condition. Avoid eating:

  • Excessive ionised salt.
  • Kelp
  • External iodine supplements
  • Fish and seaweed
  • Egg yolk since it contains excessive Iodine.

Soy-rich foods

Soy-rich foods are typically detrimental to the overactive thyroid gland. Soy milk, soy sauce, soybean oil, tofu, and edamame are all examples.


Caffeine consumption might increase hyperthyroidism symptoms. Caffeine can cause an increase in heart rate and palpitations. Caffeine might exacerbate anxiety and insomnia symptoms. When diagnosed with Hyperthyroidism, try to avoid coffee, sugar drinks and other caffeinated stimulants. Refrain or reduce the consumption of chocolate, energy drinks, soda, black tea, and coffee.

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Foods with added sugar 

Too much sugar is bad for the body as it causes a sudden spike in blood sugar levels. An elevated blood sugar level can produce palpitations and an increase in heart rate. Soft drinks, pancake syrup, jelly, and cakes are packaged foods. This product contains added sugars such as dextrose, fructose, and corn syrup. Foods with added sugar are often empty calories that aggravate hyperthyroidism symptoms.


A gluten-rich diet is hypoglycemic, disrupting normal blood sugar levels. Food products such as pasta, rice, and bread include gluten, which is difficult to digest and activate hyperthyroidism symptoms. Gluten can also trigger thyroid inflammatory responses.

Avoid dairy and whole milk 

Dairy products are often high in Iodine, which is harmful to those with Hyperthyroidism. Avoid consuming excessive milk, cheese, egg yolks, and other dairy products. 


consumption can be harmful to the thyroid glands and impairs the body’s general capacity to use and absorb thyroid hormones.

Food to avoid with Hyperthyroidism: summary

Iodine rich Foods Egg yolk, iodinated salts, seaweed, fish, kelp
Soy-based foods Miso, soy milk, beans, tofu, edamame
Caffeine Coffee, tea, chocolate, energy drinks, soft drinks, black coffee
Food with added sugar Cakes, syrup, jelly, packaged drinks
Gluten rich food Pasta, rice, bread
Dairy Milk, cheese



Can I eat peanut butter if I have a thyroid?

Peanut butter and peanuts can worsen hypothyroidism. It is generally advised to avoid these in case of hypothyroidism.

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Dr. Divya Rohra has completed her MBBS from Grant Medical College and Sir JJ Group of Hospitals, Mumbai in 2019 with an excellent academic and clinical record. She has been the Joint Academic & Research Secretary of her batch in the year 2016-17 and successfully conducted various conferences and CMEs at her college. She has been the Director of Editorial and Web Communications of Rotaract Club of the Caduceus for two years. She has worked as a Paediatrics House Officer and Covid-19 Medical Officer at Mumbai. She has participated in various Quiz competitions, Poster Presentations, Symposia, Medical Documentary making competitions during her UG days and won awards for the same. She is working with PregaJunction as a Medical Content Auditor.

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