The Current Treatment of Hypothyroidism

There is a genetic polymorphism, which is sort of a small... It's a small change in one of the enzymes that convert T4 to T3. About half of the population have that difference. When you have a healthy thyroid, remember the thyroid is there to keep a normal T3 in the circulation. Some people who need to take thyroid hormone needed because their thyroid has been surgically removed and they don't have any thyroid anymore.