the thyroid hormones help regulate all sorts of functions in the body. I believe EVERYONE should have their levels checked yearly..... and if your regular doctor tells you your levels are normal, and you still feel bad, then go to an Endocrinologist. I am a thyroid cancer survivor, and I had an overactive thyroid when I was around 30. Too much hormones made me lose weight, be agitated all the time, couldnt sleep, was angry at everyone in sight, had heart palpitations constantly, and had tons of anxiety! My marriage almost fell apart because of this illness. (realized that years later when I got to feeling "normal" again!)
True, underactive thyroid is more common, but an overactive thyroid can cause great problems too...there are many symptoms that you may not even "know" are related to thyroid problems. So I encourage all of you.... next time you go into the doctor, have them check your levels.