Overview: Iodine is commonly taken to increase iodine levels. Common side effects include diarrhea, nausea, vomiting, rash, or stomach discomfort. Serious side effects are rare but can include thyroid ...

NEW YORK (Reuters Health) - Iodine deficiency is a major health problem worldwide, but a new study points to the potential downsides of too much iodine. Iodine is a mineral found in iodized salt, ...