It’s funny that you should mention the thinning as you have gotten older Kay.  I too have had my hair thin out a lot in the last five years or so.  I did have a very full thick head of hair, though it was fine in texture, it was thick in density.  Meaning that in accordance to my coloring and hair type, there were more hair follicles per square cm of scalp.  Darker haired people generally have less hair per sq cm than blondes because their hair is coarser.  Anyway, it feels a lot thinner and also is more wavy now.  Going back through the family my Grandmother on my father’s side lost her hair and went very thin on top.  Thinner than women normally do anyway and it looked like male pattern baldness.  She also had hirsutism.  In the last few years I have been using steroid inhalers and also had to use prednisolone on occasion in large stress doses for asthma type allergy and have put my problems down to that really.  What with having time on them and then  not using them for long periods, I think the times when I have used such it has affected the follicle in such a way that  when I have had periods where I did not use them and the anabolic levels have returned back to some normality, that the follicles have then been too sensitive to the small natural levels of test or dht and this has caused hair loss.  Well this is how I feel it has happened anyway, and is a more likely explanation to why my hair has thinned.  If it has been this, then I expect that at some point hair would thicken up if I didn’t need the inhalers.  As of yet I havn’t been able to do one winter without them really, so I havn’t been able to test that theory.  :)