“The main hormones your thyroid make and release in the body are triiodothyronine (T3) thyroxine (T4).

Hyperthyroidism is a condition in which your thyroid creates and releases more of these hormones than you need.

Hyperthyroidism, also called overactive thyroid, is when the thyroid gland makes more thyroid hormones than your body needs. The thyroid is a small, butterfly-shaped gland in the front of your neck. Thyroid hormones control the way the body uses energy, so they affect nearly every organ in your body, even the way your heart beats. With too much thyroid hormone, creating many of your body’s functions to speed up.

About 1 out of 100 Americans ages 12 years and older have hyperthyroidism  Hyperthyroidism is more common in women and people older than 60.”

National Institute of  Diabetes and Digestive and Kidney Disease –  NIDDH