A thyroid goiter is an enlarged thyroid gland. Learn more about what causes thyroid goiter and the treatment options for this condition.

Thyroid nodules are quite common and are usually benign. However, a small number of thyroid nodules can be cancerous. Find out when to worry about thyroid nodules.

If you have low thyroid hormone levels, your healthcare professional may prescribe levothyroxine. Learn how this medicine works, as well as common levothyroxine side effects.