Hopefully this link stays long enough to be useful to those interested -- an article in the British Annals of Surgery notes what they claim as beneficial hormone changes in patients who have had certain kinds of WLS.
http://news.yahoo.com/s/nm/20060203/hl_nm/weight_loss_dc;_ylt=Ao_QOQ__oshabMcUPCiUkBla24cA;_ylu=X3oDMTA4NW41NTlyBHNlYwMxNzAx
http://news.yahoo.com/s/nm/20060203/hl_nm/weight_loss_dc;_ylt=Ao_QOQ__oshabMcUPCiUkBla24cA;_ylu=X3oDMTA4NW41NTlyBHNlYwMxNzAx