If a friend posed this question to me, the first thing I would say is to make a doctor's appointment. Find out if you have any underlying medical conditions. Then with the doctor's approval, join a weight loss clinic such as LA Weight Loss. A relative joined last year and she lost over 30 pounds. Her main problem was eating when she was under stress, not making time for regular exercise, and most of all, not having the self-discipline to do it on her own. Best of luck
