Age related thinning is due to the loss of collagen, keratocytes, and melanin at the level of the hair follicle. I have read it is more of an autoimmune response as well that differs somewhat with male pattern baldness which mainly DHT is responsible for the hair follicle to shrink and cause the hair to miniaturize to its final stage as a vellus hair. Age related hair becomes more brittle as you age and of course turns gray eventually and becomes thinner when it turns gray. However, it continues to shed and regrow a new gray hair that will not be miniaturized like male pattern baldness produces. The same things happen with the skin as it loses collagen and thins as you get older. As I mentioned before, if you dye your hair, it causes the hair to become thicker because it causes the hair shaft to swell with added color and it will rejuvenate the hair so it looks just like it looked before it turned gray. I am sure some people may have a combination of age related thinning and male pattern baldness. Clinton has a full head of hair but its alot thinner now because its gray. Clinton would not be considered to have male pattern baldness. If he dyes his hair, it will look totally thicker as if he has not signs of thinning. As the saying goes, people in their 40's have about a 40 percent chance of showing signs of THINNING. The question is whether the thinning is age related or from male pattern baldness. I guess that is where you need to have a miniaturization test. Men in their 50's will have a 50 percent chance of show signs of thinning. And as you age more, your percentage goes higher. I think thinning and balding are two words we kind of use interchangeably. I think people think, if you are thinning you must be balding. I really honestly feel balding is most obvious in people who are in their late teens to early twenties. You really get to see the male pattern baldness clearly when it starts early. The mature hairline is not considered to be male pattern baldness. Actually, according to the Norwood scale, if you are a NW2 or a NW1, you are not considered to have male pattern baldness starting. Its when you become a NW3 that you are labeled as having early male pattern baldness. So all you NW1 and NW2 have no business being here. Just kidding. In my case, I probably have more age related thinning than male pattern baldness so Propecia is not going to help too much in my case. However, from what I read, Copper peptides and Dr Proctor's Prox-n, Nano, and Proxiphen as well as Minoxidil will help age related thinning somewhat as well as taking supplements to boost the immune system. Who knows maybe the LLT helps too with age related thinning. I am sure if anything I said is wrong, Bryan will correct me. I am just going by what I have read on the internet. I have no idea if can be backed up with scientific studies. To be honest, if you really look at the guy's hair in the first photo at the beginning of this thread, considering his age and he does not show any gray hairs( unless he covers them up), I would say he may have enough miniaturization that could be considered male pattern baldness but he does not appear to be a NW3 yet so labeling him with male pattern baldness might be a little pre-mature at this time.