I've been reading that it is "normal" for women to lose hair as they get older. Sorry, but in this instance, I don't believe "normal" is synonymous with "healthy." I lost all my hair when I went through chemo 4 years ago. That may have been "to be expected" but it certainly isn't a marker of good health. It seemed to have mostly grown back, but lately I notice a distinct change in my hairline. I'm getting extremely thin on top and at the crown. What I am wondering is this: If I could convince my doctor (or find one that doesn't require convincing) to add some T3 to my Synthroid therapy, is there any chance some of that lost hair would grow back?