It is interesting that him, and other rich men like Kurzweil are choosing plant-base diets instead of the Taubes, paleo crowd-pushed meat and fat diets. They can't be both right.
Eat when you're hungry. Stop when you're full. Laugh often. Play (physically) more than occasionally. Drink and be merry. Stop worrying. You'll live forever.
And even if you only live a short while, it's better than living a boring life for a slightly longer while.