I had a very thick head of hair until my late 30's and then I noticed thinning, but only in the crown area. I tried Rogaine, and later, some generic form of Propecia, but I was not consistent with the daily regiment and the thinning continued.
Last year I finally decided to have an HT of 1500 grafts using the strip method. I was very surprised when they recommended only 1500 grafts and now, 6 1/2 months later, I've definitely seen some growth, but well short of the desired coverage. I'm doubtf