A lot of people on this WOE complain of hairloss. I began again in March and started losing hair in May. It finally stopped in Sept. I started to take Biotin in August. 2500mcg. Found it at GNC. Some people use it. I can't swear it helped but I see new hair growth now and I'm not losing.... By the way, some feel it's because of the stress to your body at the rate of losing the weight is why the hair falls out.