5 Vitamins for Hypothyroidism and Hashimoto’s Disease (Underactive Thyroid)


Hypothyroidism is a condition where the thyroid gland does not produce or release enough hormones, leading to a slow metabolism. This can cause symptoms such as weight gain, sensitivity to cold, and hair loss, among others.

What is the Thyroid? The thyroid is a butterfly-shaped gland located in the neck, just in front of the trachea. It is essential for producing hormones (T3, T4, calcitonin) that regulate metabolism, including digestion, heart rate, breathing, body temperature, and bone mineralization.

When the thyroid does not release sufficient hormones, several symptoms may appear:

  • Thinning hair, especially on the outer edges of the eyebrows

  • Difficulty tolerating cold

  • Weight gain

  • Persistent tiredness or depression

  • Vertical ridges on the nails

If untreated, hypothyroidism can lead to the development of nodules and goiters, which may cause a visible lump on the neck. In advanced stages, untreated hypothyroidism can result in myxedema coma, a life-threatening condition where internal organs slow down and begin to malfunction.

Causes of Hypothyroidism In most cases (around 90%), hypothyroidism is caused by Hashimoto’s disease, an autoimmune disorder in which the immune system attacks healthy thyroid tissue. This condition can occur when the intestinal wall is damaged, allowing undigested proteins to enter the bloodstream, which may trigger an immune response.

Essential Nutrients for Hypothyroidism

  1. Selenium (200 µg) Selenium is a trace mineral that plays a crucial role in converting inactive thyroid hormone (T4) into its active form (T3). Research has shown that selenium supplementation can help speed up this conversion and reduce thyroid antibodies (TPOAb and TgAb), potentially preventing further damage to the thyroid.

  2. Vitamin C Complex Vitamin C, along with its bioflavonoids, helps support collagen formation and can help heal the intestinal lining. Vitamin C may also reduce inflammation, which can be beneficial for individuals with thyroid dysfunction. Foods rich in vitamin C include cabbage, sauerkraut, strawberries, bell peppers, and cruciferous vegetables.

  3. Iodine and Zinc Iodine and zinc are essential minerals for thyroid hormone production. It’s important to consume iodine-rich foods such as seaweed (kelp, nori), shellfish, and oily fish regularly. Zinc can also be found in nuts, seeds, and whole grains.

  4. Vitamin D3 (and K2) Many people with hypothyroidism are deficient in vitamin D. Supplementing with 10,000 IU of vitamin D3 daily, combined with vitamin K2 (100 mcg), can help balance hormones and reduce inflammation in the thyroid.

Common Causes of Hypothyroidism

  • Excessive gluten consumption and damage to the intestinal wall

  • High intake of vegetable oils and fried foods

  • Liver diseases that affect thyroid hormone conversion

  • Elevated cortisol levels due to stress or hormonal changes (e.g., menopause)

  • Deficiencies in iodine or selenium

  • Certain medications (e.g., statins, diuretics, or antibiotics)

Lifestyle Tips to Support Thyroid Health

  1. Dietary Changes

    • Consider eliminating gluten, grains, and processed vegetable oils for at least 90 days. Focus on eating nutrient-dense, anti-inflammatory foods like bone broth, raw garlic, kefir, sauerkraut, and low-glycemic fruits like berries.

    • Include organic, anti-inflammatory vegetables such as steamed broccoli, cauliflower, green leafy vegetables, and radishes.

  2. Healthy Fats

    • Avoid a low-fat diet, as your body requires fats to produce hormones. Good sources of healthy fats include cod liver oil, grass-fed butter, and free-range egg yolks, which also provide retinol (active vitamin A).

  3. Adaptogens

    • Adaptogenic herbs like ashwagandha and lemon balm tea can help manage stress, lower cortisol levels, and balance estrogen levels, which can all support thyroid health.

  4. Support Thyroid Hormone Conversion

    • Taking bile salts or bile acid factors before meals may help improve the conversion of T4 to T3 in the liver, especially in individuals with thyroid dysfunction. Look for supplements that contain ox bile or tudca to support liver function.

  5. Fasting and Autophagy

    • Intermittent fasting, where you consume all meals within a 6-hour window, can promote autophagy, reduce inflammation, and help balance the immune system, potentially benefiting those with hypothyroidism.

Conclusion While there are numerous vitamins, minerals, and lifestyle changes that may support thyroid health, it’s important to consult with a healthcare professional before starting any supplementation or significant dietary changes. Hypothyroidism is a serious condition that requires proper medical diagnosis and treatment. Though natural remedies and dietary interventions can support thyroid function, they should not replace conventional medical treatment. Always work with your doctor to develop a comprehensive treatment plan tailored to your needs.


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