Could those common symptoms be thyroid trouble?

Fatigue, brain fog, and weight gain are telltale signs that may be mistaken for other conditions.

Photo: Thinkstock

The butterfly-shaped thyroid gland is in the neck. It produces hormones that affect every cell in the body.

To continue reading this article, you must login.
  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »