Foods to Avoid If You Have Hyperthyroidism


A healthy, nutritious, and well-balanced diet is critical for optimal health. This article will tell you which foods to avoid if you have hyperthyroidism. If you have this illness, you should eat a range of healthful foods in moderation.

Fruit, vegetables, legumes, dried fruits, fish, poultry, and lean meat are all part of a healthy and nutritious Hyperthyroidism diet plan. It also entails avoiding junk and unhealthy foods, such as deep-fried and processed food products.

Healthy eating habits contribute to improved health and well-being. It promotes healthy growth and development. Furthermore, it reduces the risk of chronic health problems such as heart illness, diabetes, and other thyroid diseases.

What exactly is hyperthyroidism?

Hyperthyroidism is a disorder in which your thyroid gland secretes an unusually large amount of thyroid hormones. It has the potential to improve your body’s overall metabolic processes. It encourages abnormal calorie burning, which leads to weight reduction.

To keep your thyroid levels in check, both medication and food are essential.

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Symptoms and Diagnosis of Hyperthyroidism

Hyperthyroidism Symptoms

Thyroid hormone stimulates metabolic processes or metabolism, which is a catch-all word for all cellular operations in the body. It increases the rate of your body’s metabolism, causing the body’s activities to become overactive. Here are a few of the most serious signs of hyperthyroidism.

Weight Loss:

If you have hyperthyroidism, you may lose a lot of weight because your body burns more calories even when you’re not doing anything because of the hyperactive thyroid hormone.

Increased Appetite:

According to one study, an increase in appetite is caused by thyroid hormones that operate on your brain’s appetite centre. Thyroid hormone levels that are abnormally high accelerate your metabolism. As a result, it stimulates your appetite and increases your food consumption.

Increased Heart Rate:

One of the signs of hyperthyroidism is an increased heart rate. According to one study, high levels of thyroid hormones promote a quick heart rate. At rest, it could be more over 90 beats per minute.


When thyroid hormone levels are unusually high, bowel movements are accelerated. As a result, it increases fluid secretion along the gut walls. As a result, it causes diarrhoea and indigestion.

However, hypothyroidism causes a slowing of metabolism. According to the study, these impede the emptying of meal contents from the abdomen to the intestine. As a result, food content relapses back into the food pipe, resulting in acid reflux or heartburn, bloating, gas, and other symptoms.

Hyperthyroidism Diagnosis

Signs and symptoms, as well as physical examination, are used to make a diagnosis. They are accompanied by a series of investigations, which include.

Physical examination includes monitoring your symptoms and signs, as well as reviewing your medical history to see if you have a history of other diseases, current or previous drugs, and so on.

Thyroid hormone levels are measured via blood tests. Hyperthyroidism and hypothyroidism are indicated by high and low levels, respectively.

When your thyroid levels are abnormal, a radioiodine uptake test is performed. It aids in determining the cause of hyperthyroidism. Abnormal radioiodine absorption implies an excess of thyroid hormone production.

A Thyroid Scan generates clear images of your thyroid gland on a computer. It indicates the amount of thyroid inflammation, as well as the size and structure of the thyroid. Furthermore, this test demonstrates how iodine accumulates in your thyroid.

Thyroid ultrasound creates images of the thyroid by using high-intensity sound waves. It also aids in the diagnosis of thyroid nodules that are rarely identified in conventional tests.

Thyroid Hyperthyroidism and Its Complications

If left untreated, hyperthyroidism raises thyroid hormone levels. It can increase the risk of heart disease, anxiety, and brittle bones, among other things.

Let’s have a look at some Hyperthyroidism problems.

Hyperthyroidism can lead to heart difficulties, which can be fatal. Thyroid hormone imbalances cause the heart to beat faster, raising blood pressure. Cardiac arrest, stroke, and heart failure are all caused by a rapid and irregular heart rate and rhythm.

Osteoporosis is a condition in which your bones become brittle. Excess thyroid hormones in the body remove calcium from the bones. Bones are prone to fracture due to calcium shortage. As a result, untreated hyperthyroidism causes osteoporosis.

Related – The Definitive Food Guide to Healthy Bones

Eye Disorders: Protruding or enlarged eyes, impaired or double vision are indications of hyperthyroidism in its advanced phases. In its most severe form, it can cause blindness.

Body Imbalance: According to one study, those with high amounts of circulating thyroid hormone develop vertigo. When there is a difference in in-ear pressure, it is considered a disease. It causes a state of imbalance in the body. It also makes you dizzy and lightheaded.

Hyperthyroidism and Food

Thyroid hormone synthesis and function may be influenced by diet. Foods can not cure hyperthyroidism, although they can help to manage its symptoms.

Specific food categories, such as goitrogenic foods, should be avoided in hyperthyroidism, as we will cover in detail below. These increase thyroid hormone production and worsen thyroid symptoms. Foods that interfere with thyroid medication should be avoided as well.

Foods to Stay Away From If You Have Hyperthyroidism

Iodine and caffeine-rich foods, as well as cruciferous vegetables, may aggravate hyperthyroidism symptoms.

Caffeine-containing foods, for example, inhibit the absorption of thyroid medication. Iodine and iodine-rich foods promote thyroid hormone synthesis, which is hazardous and should be avoided.

If you have hyperthyroidism, you should avoid the following foods:

Foods High in Iodine

Iodine stimulates the thyroid gland to secrete more thyroid hormones, exacerbating hyperthyroidism symptoms. As a result, it is advised to avoid iodine-rich meals. Iodized salt, seaweed, certain types of seafood, kelp, and shellfish are examples.


Caffeine has stimulating characteristics. As a result, it might boost metabolism and exacerbate hyperthyroidism symptoms such as heart palpitation, diarrhoea, fast tremors, anxiety, and so on.

Furthermore, it can inhibit the absorption of thyroid medicine. Caffeine-rich beverages such as black tea, coffee, sodas, and energy drinks should be avoided.

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Refined Flour

Refined flour is devoid of nutrients and difficult to digest. Furthermore, they are hypoglycemic foods that cause blood glucose and hormone levels to fluctuate.

As a result, whole grains should be used in place of refined flour bread, snacks, and cereals. Brown rice, barley, quinoa, and other grains are included.

Red Meat

Red meat is a food that causes inflammation. It suggests that it may cause organ inflammation. As a result, in the case of hyperthyroidism, it causes thyroid inflammation.

It is best to avoid any foods that may cause the same symptoms. If consumed on a regular basis for an extended period of time, red meat causes inflammation.

Red meat contains significant levels of cholesterol and harmful fat, and excessive consumption leads to fat accumulation in the blood vessels. As a result, they impede blood flow and contribute to high blood pressure.

As a result, this is a primary contributor to a variety of heart abnormalities that are symptoms of hyperthyroidism.

Cruciferous Vegetables

Cruciferous vegetables include broccoli, cabbage, cauliflower, spinach, and kale. They are high in dietary fibre, but they also contain goitrogens, which may interfere with thyroid hormone synthesis.

As a result, they inhibit the thyroid gland from absorbing iodine, exacerbating symptoms and interfering with thyroid function.


Isoflavones are found in soy and soy products. It is a substance that stops thyroid medicine from being absorbed. As a result, it may be best to avoid soy products until you recover from thyroid problems.

Foods high in fibre

Weight loss is one of the symptoms of hyperthyroidism. Weight loss is aided by a high fibre diet. As a result, it is not recommended for hyperthyroidism. They fill you up and satisfy you. It makes you unable to eat.

They also interfere with thyroid medicine because the fibre content binds with the therapeutic components, preventing drug absorption.

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Alcohol has a number of negative effects on numerous bodily functions. For starters, it has a negative impact on hyperthyroidism. According to research, it lowers thyroid-stimulating hormones.

Thyroid-stimulating hormones are linked to the regulation of thyroid hormones in your body. Furthermore, alcohol has a harmful effect on the thyroid gland, preventing your body from properly utilising thyroid hormones.

What Else Can You Eat?

It is recommended to consume a balanced, nutritious, and healthy diet if you have hyperthyroidism. You can seek the advice of a nutritionist for an adequate and precise diet.

However, it should be used in conjunction with your recommended drugs and plenty of physical activity. Read on to learn about certain food categories that can help with hyperthyroidism symptoms.

Certain types of leafy greens

Excess thyroid hormone synthesis causes calcium deficiency in the bones. As a result, your bone becomes weak and prone to fracture. Spinach, cilantro, and parsley are high in calcium and can benefit persons with hyperthyroidism.

Fatty Acids Omega-3

Hyperthyroidism impairs liver function and causes toxins to accumulate in the blood. According to research, omega-3 fatty acids increase liver function. Omega-3 fatty acids are abundant in almonds and cashews.

Furthermore, salmon and tuna are high in omega-3 fatty acids. They are also abundant in vitamin D, which aids in calcium absorption and reduces the risk of osteoporosis.

Furthermore, the good fats in fish aid in weight maintenance, which is critical in hyperthyroidism, where weight loss is a sign.

Foods fermented

Probiotics, or beneficial bacteria, are found in fermented foods. They aid in the improvement of your gut health, which is impacted by thyroid imbalance. Furthermore, a study found that an imbalance in gut health is linked to organ inflammation.

Inflammation causes hyperthyroidism. Probiotics can be found in kimchi, kefir, idli, and yoghurt.

Fruits and vegetables

Most fresh fruits include antioxidants, which are molecules that protect cells from damage caused by free radicals. As a result, they reduce the chances of thyroid disease. As a result, a small amount or one portion of diverse fruits is ideal.

A serving of fruit is typically half a cup (120g). Fruits such as apples, avocados, and berries are recommended by nutritionists.

Extra Virgin Olive Oil

Thyroid hyperthyroidism is an autoimmune disorder. It means that your body’s defence cells attack your bodily cells, mistaking them for foreign bodies. The immune system reacts negatively to inflammation in thyroid illness.

According to research, olive oil contains anti-inflammatory qualities. It alleviates the symptoms of inflammation in thyroid disorders. Olive oil contains a high concentration of omega-3 fatty acids. They raise beneficial cholesterol levels in the body and help to prevent heart problems.

Dried Fruits and Nuts

Selenium is a mineral that is found in dried fruits. A study found that it can help with hyperthyroidism. Furthermore, it improves thyroid hormone synthesis regulation. It has anti-inflammatory qualities as well. As a result, they alleviate the symptoms of inflammatory illnesses associated with thyroid abnormalities.

Hyperthyroidism Dietary Guidelines

There is no specific hyperthyroid diet. Your diet, on the other hand, is crucial. It, combined with rigorous adherence to prescriptions, can help to reduce hyperthyroidism symptoms. Furthermore, specific meals and their nutrients aid in the regulation of thyroid function.

A high-calorie, nutrient-dense diet is recommended for hyperthyroidism. Fruits and vegetables, whole grains, lean meat, and low-fat dairy are all included.

Consume low-iodine meals. The relationship between iodine and hyperthyroidism has already been discussed. Iodine levels are low in non-iodized salt, eggs, fresh fruits and vegetables, and unsalted butter.

Avoid eating processed, canned, or quick foods. The preservatives in them contain a lot of salt and iodine, which can aggravate your hyperthyroid symptoms.

Goitrogen-containing cruciferous vegetables should be avoided. They prevent iodine absorption from being used in the creation of thyroid hormones. Cruciferous vegetables include broccoli, brussels sprouts, bamboo shoots, cabbage, spinach, and cauliflower.

Eating iron-rich meals is critical for maintaining normal thyroid levels. Iron is essential for all basic physiological functions. It is critical for the delivery of oxygen to cells, including the thyroid.

As a result of iron deficiency, a condition known as anaemia develops. According to one study, chronic anaemia causes hyperthyroidism. Iron is abundant in dried beans, sprouts, green leafy vegetables, almonds, and fowl.

Consume foods high in calcium and vitamin D. Hyperthyroidism causes bone weakness. A calcium-rich diet can help to strengthen your bones.

Furthermore, vitamin D aids calcium absorption by bone cells. Calcium and vitamin D are found in figs, low-fat dairy products, eggs, chicken, and seafood.

Consume modest, regular meals. When you have hyperthyroidism, you tend to burn calories more quickly. Smaller portions of food consumed at regular intervals will aid in the prevention of weight loss.

Consume plenty of antioxidants! Antioxidants are chemicals that protect bodily cells from oxidative damage. Thyroid illness is caused by oxidative stress, which causes radical cell harm.

Antioxidants are abundant in fruits and vegetables such as apples, bananas, mango, grapes, tomatoes, and green leafy vegetables. They may help to prevent or alleviate the symptoms of thyroid illness.

Take your prescribed medication at the appropriate time and do not discontinue it without seeking medical assistance. According to one study, levothyroxine, or thyroid medication, should be taken half an hour before breakfast. As a result, it aids in the absorption of the medication.

To summarise – Foods to Avoid for Hyperthyroidism

Although hyperthyroidism cannot be cured, it can be easily managed. A well-balanced diet, together with medications and lifestyle changes, can help keep your hormone levels in check. A healthy diet can help to balance thyroid hormone levels and control hyperthyroid symptoms.

A low-iodine diet prepared at home is best. Seek advice from a health care team. They can advise you on dietary and lifestyle adjustments for thyroid problems. They can also plan a nutritious, balanced diet and a healthy living regimen.

Frequently Asked Questions (FAQ)

Q: Is it OK to eat bananas if you have thyroid disease?

A: Bananas are indeed beneficial to thyroid health. Bananas contain selenium, which is anti-inflammatory. Furthermore, the antioxidant found in bananas protects your cells from free radical damage.

Q: Should levothyroxine be taken in the morning or at night?

A: It is preferable to consume levothyroxine in the morning. It is best to eat it half an hour before breakfast because it aids in the absorption of the medication. Check with your doctor again to see if they have any alternative suggestions.

Q: Does the thyroid influence blood pressure?

A: The thyroid does have an effect on blood pressure. Thyroid hormone deficiency causes the heart to beat faster. As a result, blood pressure rises.

Q: Can thyroid cause eye problems?

A: Protruding or enlarged eyes, impaired or double vision are signs of hyperthyroidism. In its most severe form, it can cause blindness.

Q: Can a thyroid condition create dizziness and balance issues?

A: Shortness of breath and dizziness are symptoms of thyroid illness. As a result, it has an impact on the body’s balance. It can be seen in both hyperthyroidism and hypothyroidism.

Q: Can thyroid problems cause ear problems?

A: The development of vertigo is caused by a high level of thyroid hormones. When there is a difference in in-ear pressure, it is considered a disease. Furthermore, it causes a state of imbalance in the body.

Q: Can a thyroid condition induce acid reflux?

A: The thyroid gland can induce acid reflux. Low thyroid levels cause a delay in the passage of food from the abdomen to the intestine. It causes food content to relapse back into the food pipe, resulting in acid reflux.

Q: How does a hypothyroid person feel?

A: Hypothyroidism causes a slowing of physiological functions. They may feel fatigued and feeble. Other symptoms include weight gain, joint discomfort, and a slower heart rate.

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