I lost my hair all in the back. every time i touch my hair it comes out in bulk. i went to the doctor and she gave me a b12 shot i go back and get another one on june 30, i hope this work because it is too hot for wigs in chicago right about now. i had my surgery in nov 23 2009. and have lost 64lbs. off of a 424 body and i feel great besides the hair loss. im goin to try the biotin too to see what works the fastest.:biggrin::thumbup: