My hairloss is how I found out I had hypo. I told my doctor when I was in college and the first thing she said was to have my thyroid checked. I've been on Synthroid now for 7 years and it hasn't helped. Every person I've ever lived with has complained about the hair. I've always had very thick hair so I didn't care, but now my hair dresser is even noticing it's thinning. I'm going to have blood work done again and I might try another medicine because none of my other symptoms have gone away either.