That's really good of you to help him out. I don't think there's as much of that today, friends being there when they need help, as there used to be. He has a diet from his doctor so he should follow it. I was going to post something until I read that. But anyway, it's very important to count calories and for a guy like him that should be about 2000 calories a day that he should stay under. Also, cut way down on the carbs. You need to lose weight the right way a little at a time, like 1-2 lbs. a week. You have to do both diet and some kind of exercise.