Can supplements support healthy thyroid function?

You’re likely familiar with the importance of a healthy thyroid for maintaining overall well-being. But do you ever wonder if there are supplements out there that can help support your thyroid function? In this article, we explore the topic of whether or not supplements can play a role in promoting a healthy thyroid. So, if you’ve ever pondered on the potential benefits of these dietary additions, stick around as we uncover the facts and shed light on this interesting subject.

Can supplements support healthy thyroid function?

What is the thyroid gland?

The thyroid gland is a small, butterfly-shaped gland located at the base of your neck, just below the Adam’s apple. Despite its relatively small size, the thyroid gland plays a crucial role in regulating various bodily functions. It produces hormones that are responsible for controlling metabolism, energy levels, and the overall balance of other hormones in your body.

Common thyroid disorders


Hypothyroidism, also known as an underactive thyroid, occurs when the thyroid gland doesn’t produce enough thyroid hormones. This can lead to a slowed metabolism, weight gain, fatigue, and depression. Some common symptoms of hypothyroidism include feeling cold, dry skin, hair loss, and difficulty concentrating.


Hyperthyroidism is the opposite of hypothyroidism, characterized by an overactive thyroid gland that produces excessive amounts of thyroid hormones. Symptoms of hyperthyroidism may include weight loss, rapid heartbeat, anxiety, tremors, and intolerance to heat. It can cause an irregular heartbeat, irritability, and difficulty sleeping.

Autoimmune thyroiditis

Autoimmune thyroiditis, also known as Hashimoto’s thyroiditis or Graves’ disease, is an autoimmune disorder in which the immune system attacks the thyroid gland. This can result in either an underactive or overactive thyroid, depending on the specific condition. Symptoms of autoimmune thyroiditis can vary but may include fatigue, weight changes, mood swings, and muscle weakness.

Can supplements support healthy thyroid function?

Importance of healthy thyroid function

Regulation of metabolism

One of the primary functions of the thyroid gland is to regulate metabolism. Thyroid hormones control the rate at which your body converts food into energy, affecting how quickly or slowly your body burns calories. An underactive thyroid can cause a sluggish metabolism, leading to weight gain and difficulty losing weight, while an overactive thyroid can cause a fast metabolism, resulting in unintentional weight loss.

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Maintenance of energy levels

Your thyroid gland also plays a vital role in maintaining optimal energy levels. Thyroid hormones ensure that your cells have the energy they need to function properly. When your thyroid is functioning optimally, you’re more likely to have consistent energy throughout the day. However, imbalances in thyroid hormones can lead to fatigue and feelings of exhaustion.

Impact on mood and mental health

Thyroid hormones have a significant impact on mood and mental health. Adequate levels of these hormones are necessary for the production of neurotransmitters, such as serotonin and dopamine, which regulate mood and emotions. When thyroid function is disrupted, it can result in mood swings, depression, anxiety, and difficulty concentrating.

Role of supplements

Supplements that support thyroid function

While supplements should never replace proper medical care for thyroid disorders, they can play a supportive role in maintaining healthy thyroid function. Some supplements that have been shown to support thyroid health include iodine, selenium, zinc, vitamin D, and specific vitamins and minerals.

Nutrients essential for thyroid health

Several nutrients are essential for optimal thyroid function. These include iodine, selenium, zinc, vitamin D, vitamin B12, iron, and omega-3 fatty acids. Ensuring you have an adequate intake of these nutrients through your diet, and considering supplementation if needed, can contribute to a healthy thyroid.

Can supplements support healthy thyroid function?

Iodine supplementation

Iodine’s role in thyroid function

Iodine is a vital mineral for the production of thyroid hormones. It is a key component of thyroxine (T4) and triiodothyronine (T3), the two primary hormones produced by the thyroid gland. Iodine deficiency can lead to hypothyroidism and goiter, a condition characterized by an enlarged thyroid gland.

Recommended iodine intake

The recommended daily intake of iodine varies depending on age and life stage. For adults, the recommended daily intake is 150 mcg. Pregnant and breastfeeding women have higher iodine requirements, with recommended intakes of 220 mcg and 290 mcg, respectively. It’s important to note that excessive iodine intake can also have negative effects on thyroid function, so it’s essential to stay within the recommended limits.

Iodine-rich food sources

Iodine can be obtained through various food sources, including iodized salt, seafood (such as seaweed, fish, and shellfish), dairy products, and eggs. Including these foods in your diet can help support healthy thyroid function and meet your iodine needs.

Considerations for iodine supplementation

While iodine supplementation may be necessary for individuals with diagnosed iodine deficiency, it’s crucial to consult with a healthcare professional before starting any supplementation. They can evaluate your specific needs and provide personalized advice based on your health status and any existing thyroid conditions.

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Selenium supplementation

Selenium’s role in thyroid health

Selenium is a trace mineral that plays a critical role in thyroid health. It is a component of enzymes that help convert the inactive form of thyroid hormone (T4) into the active form (T3). Selenium also has antioxidant properties that protect the thyroid gland from oxidative damage.

Recommended selenium intake

The recommended daily intake of selenium for adults is 55 mcg. Pregnant and breastfeeding women have slightly higher requirements, with recommended intakes of 60 mcg and 70 mcg, respectively. It’s important to be mindful of obtaining selenium from dietary sources and to consult with a healthcare professional before considering supplementation.

Food sources of selenium

Selenium can be found in a variety of foods, including Brazil nuts, seafood (such as tuna, shrimp, and sardines), meats (such as beef and chicken), eggs, and whole grains. Including these selenium-rich foods in your diet can support healthy thyroid function.

Benefits and risks of selenium supplementation

Selenium supplementation may be beneficial for individuals with selenium deficiency or certain thyroid disorders. However, excessive selenium intake can have adverse effects on thyroid health. It’s important to work with a healthcare professional to determine if supplementation is necessary and to ensure the correct dosage based on individual needs.

Can supplements support healthy thyroid function?

Zinc supplementation

Zinc’s impact on thyroid function

Zinc is an essential mineral that plays a role in thyroid function. It is involved in the synthesis and activation of thyroid hormones. Zinc deficiency can negatively affect thyroid hormone levels and impair thyroid function.

Recommended zinc intake

The recommended daily intake of zinc for adults is 8-11 mg, depending on gender. Pregnant and breastfeeding women may require slightly higher intakes. Dietary sources of zinc include oysters, beef, chicken, pumpkin seeds, and cashews.

Food sources of zinc

Zinc can be obtained through a variety of dietary sources, including oysters, beef, chicken, pumpkin seeds, cashews, and chickpeas. Including these foods in your diet can help support proper thyroid function by ensuring an adequate intake of zinc.

Supplementing with zinc

Supplementation with zinc may be beneficial for individuals with diagnosed zinc deficiency or certain thyroid conditions. However, it’s crucial to consult with a healthcare professional before starting any supplementation to determine the appropriate dosage and ensure proper monitoring.

Vitamin D supplementation

Role of vitamin D in thyroid health

Vitamin D plays an important role in thyroid health. It helps regulate the immune system and supports the conversion of T4 to the active T3 hormone. Vitamin D deficiency has been associated with autoimmune thyroid diseases and may contribute to the development of certain thyroid disorders.

Recommended vitamin D intake

The recommended daily intake of vitamin D varies depending on age and life stage. For adults, the recommended intake is generally around 600-800 IU (International Units) per day. However, it’s important to note that individual requirements may vary based on factors such as sun exposure and skin pigmentation.

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Sources of vitamin D

Vitamin D can be obtained through both dietary sources and sun exposure. Fatty fish, fortified dairy products, egg yolks, and mushrooms are good food sources of vitamin D. However, in certain cases, supplementation may be necessary to ensure adequate levels, especially for individuals with limited sun exposure or diagnosed deficiencies.

Supplementing with vitamin D

Supplementation with vitamin D should be done under the guidance of a healthcare professional, especially if you have existing thyroid conditions or other medical issues. They can assess your vitamin D status through blood tests and recommend the appropriate supplementation dosage based on your individual needs.

Other supplements for thyroid support

Vitamin B12

Vitamin B12 is involved in the production of thyroid hormones and supports overall thyroid function. Adequate intake of vitamin B12 can help maintain healthy energy levels and support mood and cognitive function. Food sources of vitamin B12 include animal products (such as meat, fish, eggs, and dairy) and fortified plant-based foods.


Iron is essential for the production and regulation of thyroid hormones. Iron deficiency can interfere with thyroid function and lead to hypothyroidism. Good food sources of iron include lean meats, seafood, legumes, leafy green vegetables, and fortified grains.


Ashwagandha is an adaptogenic herb that has been traditionally used in Ayurvedic medicine to support thyroid health. It may help regulate thyroid hormone levels and relieve symptoms of hypothyroidism. However, more research is needed to fully understand its effects on thyroid function. Ashwagandha supplements should be used cautiously and under the guidance of a healthcare professional.

Fish oil

Fish oil supplements, rich in omega-3 fatty acids, may have beneficial effects on thyroid function. They have anti-inflammatory properties and may help reduce inflammation in the thyroid gland. However, it’s important to consult with a healthcare professional before adding fish oil supplements to your routine, especially if you’re on blood-thinning medications or have any existing medical conditions.


Emerging research suggests that probiotics, beneficial bacteria that support gut health, may play a role in thyroid function. They can help maintain a healthy balance of gut bacteria, which in turn may positively impact the immune system and overall thyroid health. Including probiotic-rich foods, such as yogurt, kefir, and fermented vegetables, or taking probiotic supplements can potentially support a healthy thyroid.

Consulting a healthcare professional

Importance of personalized advice

While supplements can be beneficial for supporting healthy thyroid function, it’s essential to consult with a healthcare professional before starting any new supplements or making significant changes to your diet. They can assess your overall health, review any existing medical conditions or medications, and provide personalized advice based on your specific needs.

Potential risks and interactions

Supplements, including those that support thyroid health, can have potential risks and interactions with medications or existing medical conditions. Working with a healthcare professional can help identify any potential risks, ensure proper dosage and timing of supplementation, and minimize the likelihood of adverse effects.

Monitoring thyroid function

Regular monitoring of thyroid function is crucial when considering supplementation or making changes to support thyroid health. Blood tests, including thyroid hormone levels, can provide insights into the effectiveness of any interventions and allow for adjustments as needed. Your healthcare professional can help determine the appropriate frequency for monitoring based on your individual situation.

Remember, while supplements may play a supportive role in maintaining a healthy thyroid, they should never be considered a replacement for proper medical care. Always consult with a healthcare professional for personalized advice and guidance tailored to your specific needs.