Case in point: One man is 50-Ultra Endurance Athlete -Raw vegan One man is 44 Former Pro BB- surely doesn't eat clean all the time, but still trains.
So you're telling me a clean diet full of high nutrient foods doesn't speak for itself? I don't know many 50 year olds that look, function, perform, on the level of Rich Roll, just look at the difference, it's very obvious that diet will dictate, many aspects if not have a roll in all aspects of the human body and quality of life.