4 surprising reasons women can't lose weight

Most of us already know that eating less and moving more are the keys to dropping extra pounds. But if you're already doing everything "right" and can't seem to lose weight -- or are even gaining it -- you may have a hidden health condition that's sabotaging your efforts. And the symptoms may be so subtle that even your doctor can miss them. Here, some possible weight-loss blockers—and how to get the help you need. Read more.