Hypothyroidism (underactive thyroid)

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    Todd B. Nippoldt, M.D.

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Question

Hypothyroidism: Should I take iodine supplements?

Can iodine supplements help regulate thyroid function in a person with hypothyroidism?

Answer

from Todd B. Nippoldt, M.D.

Iodine supplements usually aren't necessary if you live in the United States or in most developed countries. Some alternative medicine practitioners recommend iodine tablets or kelp supplements — which are high in iodine — for people with hypothyroidism. It is true that severe iodine deficiency can cause hypothyroidism. But iodine deficiency is rare in the United States and other developed countries since the addition of iodine to salt (iodized salt) and other foods. If iodine deficiency is not the cause of hypothyroidism, then iodine supplements provide no benefit.

Hypothyroidism is safely and effectively treated with the synthetic thyroid hormone levothyroxine.

Next question
Hypothyroidism: Can calcium supplements interfere with treatment?
References
  1. Ross DS. Disorders that cause hypothyroidism. http://www.uptodate.com/home/index.html. Accessed Feb. 18, 2010.
AN01829 April 16, 2010

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