My surgeon (Dr. Scott, My New Self Bariatrics Des Peres Hospital, St. Louis) said that hair reflects nutrition 3 months in the past. So hair loss starting at the 3 month post surgery is on schedule. I am now 7 months post surgery and I have hair starting to regrow. Eat more protein!!!!! Take Biotin (a B vitamin). I bought 2 wigs and several hair pieces. I wear pieces and wear my hair up....beautician advice was to just wait it out for the regrowth. Of all the issues, this is workable and temporary. EAT MORE Protein