Most women get over their hot flashes in a year or so, even without therapy, but some are troubled for years. Men who develop flashes during temporary androgen deprivation usually recover within three or four months of stopping treatment. Doctors often tell patients on permanent androgen deprivation that they will also get over the problem, but most men don't. In one study, over 40% of men still had flashes after more than 8 years of treatment. In another, 72% of patients said the hot flashes interfered with sleep and 59% reported they interfered with the ability to enjoy life. Fortunately, new treatments can help.