That's sad about that old boy. They say monks/nuns have unusually long lives, but it must be rather a sterile existence. And those who go for life in a big way burn out quickly.

Dougie-over-the-road is a hundred, and he says he's eaten healthily all his life, but hasn't been averse to the odd culinary pleasure now and then.
It seems obvious that there's a middle ground. A little of what you fancy etc. Moderation in all things (except crumpets and full milk of course).