I recently saw a patient in my clinic who made me think about the many other patients like him I've treated over the years. He had a rather dramatic family history of heart disease, and had himself undergone coronary bypass surgery before his 40th birthday. He had, of course, seen many doctors before me -- including all those directly involved in his surgery. But nonetheless, he traveled a considerable distance to see me and get my advice.
We may reasonably leave out the particulars of pharmacotherapy, and merely state the obvious. Since he was very overweight, he needed to lose weight. Since he didn't exercise, he needed to start. Since he didn't eat especially well, he needed to eat far better. In other words: well, duh.