Low thyroid, also called hypothyroidism, occurs when your thyroid gland does not produce enough thyroid hormones, causing symptoms such as fatigue, weight gain, sensitivity to cold and aching. It can be treated with oral administration of thyroid hormones, but certain vitamins can also promote healthy thyroid function. However, you should always consult your doctor before beginning any new treatment or supplement.
B Vitamins
People with hypothyroidism are frequently deficient in B vitamins, particular B12. According to a May 2008 study published in the Journal of the Pakistan Medical Association, monthly B12 injections improved symptoms of hypothyroidism in patients both with and without a prior deficiency. Ask your doctor before beginning vitamin B12 supplements.
Iodine
Iodine is essential for proper functioning of the thyroid gland. Your body cannot produce iodine on its own, so you must acquire it through your diet. The United States Institute of Medicine recommends at least 150 micrograms of iodine per day for adults, which can be provided by iodized table salt, yogurt, saltwater fish or multivitamins. However, too much iodine can also cause problems with thyroid function, especially in people who are already experiencing this kind of difficulty, so be sure to check with your doctor before changing your iodine intake.
Vitamin A
Vitamin A is necessary for the production of thyroid hormones, but cannot be converted from beta carotene, its precursor, without the presence of those thyroid hormones. Low levels of vitamin A can thus contribute to low thyroid, and dietary supplements can help address this. As always, ask your doctor before starting to take vitamin A supplements.
References
- Pubmed.gov: Journal Pakistan Medical Association; Vitamin B12 Deficiency Common in Primary Hypothyroidism; Jabbar, Yawar, Waseem, Islam, Ul Haque, Zuberi, Khan, Akhtar; 2008
- Thyroid.com: Iodine Deficiency
- Mayo Clinic: Hypothyroidism (Underactive Thyroid)
- Herbs2000.com: Thyroid, Underactive (Hypothyroid)
