How can treatment for thyroid disease help a person’s weight return to normal?

Thyroid disease can affect a person's weight by regulating how fast they burn calories, or how slow they burn calories. It all works toward speeding up if it's overactive, or under active, it can slow everything down, so it makes them gain weight uncontrollably. Treatment for an under active thyroid will greatly increase their metabolism, burn off calories, lose the extra weight, and also prevent them from gaining future weight. It's a very important hormone to have checked.