This is tough. My father died at age 63, he had congestive heart failure. He had his first heart attack in his early 40s. Over time he developed extensive heart damage and his doctors were surprised he lived as long as he did. At a point exercise did not help and he couldn't exercise. He was probably on the slightly high end of normal weight, but still in the normal range. We can't assume your friend's health problems are due to his weight and lack of exercise. Though of course they could be, or could be a factor, but I would be careful about assigning blame. We also don't know if exercise is the right thing for him at this point in his life.
I have no idea what is the right thing to do. Ask him how ill he is and what the doctor recommends? Say that you care about him and don't want to lose him?
Last edited by goldfinch; 12-03-2011 at 02:58 PM.
Trek Madone 4.7 WSD
Cannondale Quick4
1969 Schwinn Collegiate, original owner
Terry Classic
Richard Feynman: “The first principle is that you must not fool yourself and you are the easiest person to fool.”