But prevention is impossible, metabolic damage would at best be slowed down with the right diet and exercise, and not all that much it seems. At least some of the damage is also quite independent of those factors as well. Repairing our bodies seems like the clearest approach to real longevity, regardless of the specific technique.
(No bioengineering background here though, so what do I know.)
(No bioengineering background here though, so what do I know.)