K.C.
I am 33 and my hair seems to have been thining for the last 5 years. I was worried that it was my throid. My doc said that all of my tests were in the normal range limit. However, I had a lot of other similar symptoms related to hypothyroidism (besides weight) such as cold and blue extremeties regardless of temp. I went to a different doc and was retrested with what I was told was a more sensitive test. I was low. I got some medicine which seems to help - but I still seem to leave hair everywhere. I also have a very stressful job and have experienced traumatic family events, ie death. Someone told me that the average person loses 100 hairs a day - don't know if this helps but this is my experience.