Oh I'm not planning on doing that either. I'd opt for euthanasia within 1 year already if I turned into a vegetable, at least that's what I think right now.Sounds so easy to not doing anything for 20 years but if you ever saw a vegetable in a bed for 20 years you change your opinion pretty quick.
Edit: About your other points: lifestyle is important, but it's nice to know that this research may at least give insight in what the consequences of a lifestyle are. I eat low protein, high carb, am skinny, yet I feel great and full of energy every day. I've been thinking of increasing my protein intake now and then, but this at least gives some more context about a possible negative consequence.