Iodine is an element that's required for the thyroid gland to produce thyroid hormones. Since the body does not produce iodine on its own, it needs to come from dietary sources—and striking the right ...

The 13-year-old boy came to the clinic with a rapidly ballooning neck. Doctors were puzzled.Testing ruled out their first suspicion. But further tests pinpointed what they — and the boy — had been ...