Your post reminded me of the story about the contest to see who were the world's three oldest men.
The first guy said he didn't drink, smoke, exercised regularly. Asked his age, he said 108. He looked pretty old, but was in OK shape.
The second guy said he did all the first guy did, and also stuck to a strict diet of rice, fish and greens. Asked his age, he said 114. He looked quite old, though.
The third and last guy said, "Nah, I never do any of the stuff that those guys do. I eat tons of fried food, drink all night, visit the opium dens and mess around as much as I want." He looked really old and wrinkled. Asked his age, he said 21.