Hair loss with RNY...

I haven't lost much hair on my head, so far, post RNY, but, then, I didn't have much to lose anyway! I *will* say that when I was 20-21, I lost ~90 pounds over 9 months or so, just by dieting (I think I was 135 pounds for about a nanosecond), and those 9 months unfortunately coincided with the onset of life-threatening male pattern baldness.  Quite a double-whammy!  Once it was all over, my scalp looked like my avatar does now!  My understanding is that weight-loss-related thinning of hair is more diffuse and generalized than what you usually see in male pattern baldness, so no bald patches as such.  No grass grows on this lawn anymore, but if I had a full head of hair and were worried about hair loss, aside from just making sure I was taking in enough protein, I'd seriously consider using Rogaine (topical minoxidil 5%) twice a day.  This stuff works by increasing the time that hair follicles stay in the anagen (actively growing) phase, which is probably desirable to counteract the opposing effects of rapid weight loss. /Steve