I was wondering about saw palmetto, too.. From what I understand, it is EXTREMELY effective in inhibiting DHT formation in prostate tissue. However, it does not change the body's level of DHT, and there is no (that I know of) rigorous research on whether it affects hair follicles. I've also heard that the saw palmetto available in the US has questionable potency, but that european saw palmetto is "the good stuff". No idea there...
Well, I've been taking it (160 mg/day) for about 9 months. I have a LOT of 1 to 4 inch fresh new hairs on my scalp line. However, I did not have a problem with balding to begin with. IMHO, I would suspect that it may help people with low levels of DHT to begin with, but is not effective enough to prevent or reverse hair loss in the typically more agressive hair loss in males.
It does not seem to be affecting my body hair growth at all though - in fact it seems that the sparse chest hair and cheek hair I have is just continuing to develop. However, it may just seem that way, since I have been doing my own electrolysis the last couple of months and have been paying much more attention to it. Sometimes it's really hard to judge what effects are actually ocurring..lol
Morgan - if saw palmetto works at all, it's not going to decrease your facial hair noticeably. And the thing is, there's no way to know how much more hair you may have lost on your scalp if you DIDN'T take saw palmetto.
Also, for any MTF's reading, "saw palmetto classic" may not be the best idea as zinc inhibits aromatase which converts testosterone into estrogen.
Anyway that's my 2 cents worth