I've had my thyroid checked many times, and it's always normal. I actually thought I might have an *underactive* thyroid, since my cycles are so long. If I had an overactive thyroid, my cycles would actually be short. It turns out my long cycles were due to PCOS. It really doesn't make any sense why I have such a fast metabolism, since most people with PCOS are overweight. I thought it might be something that's common among thin cysters. |