I believe you owe it to the Creator to be the best person you can be. With all at Cheney's fingertips (trainers, healthy meals) and his health problems, he should definitely consider losing weight. The party needs him and at his size, who knows what could happen. I'm sure he has great doctors looking after him but I shudder to think what the last 4 years would have been like had we lost him due to his lack of concern for his size.
VP Cheney came to Loring Air Force Base in the early 90's. He was built the same then as he is today. It's probably his stature.