I've gotten WAY overweight (67yr.old) due to a pinched sciatic nerve that can keep me from walking. So I have to use a walker for 3-4 days at a time. Comes and goes for whatever reason. No weight whatsoever on my left foot. I've been using the "MyFitnessPal" app but not completely happy. I don't hardly do any exercises for fear of aggravatingthe nerve. Yesterday saw a 5-day Nutrisystem kit. Anyone had success with them or have any other ways to lose weight? I'm to the point of asking my Dr. during my upcoming physical for some prescription help. Even thinking bypass or balloon?