I couldn't do it. Life's too short not to enjoy a big greasy cheeseburger every now and then. As long as you use good judgement and moderate your intake, you can still be perfectly healthy. I'll gladly trade 2 years off my life if it means I get to eat BBQ and steak up until then. By the time I'm 90 and it's a chore just to go to the bathroom, I don't figure I'll be missing much anyway.