The probability really says no here - while it is possible for biological organisms to persist, it’s something else entirely to rewrite the biology of an already grown organism.
You’re essentially balancing spinning plates while the universe pelts you with gravel. You’ll live with one or two plates gone, but eventually something critical fails.
To reliably live beyond 70, we’d already need to cure dementia (we’re still not sure what many types are) and cancer (unlikely for a while yet); that’s not even getting into solving the problem of restoring lost function (which we’re really bad at).
The probability really says no here - while it is possible for biological organisms to persist, it’s something else entirely to rewrite the biology of an already grown organism.
You’re essentially balancing spinning plates while the universe pelts you with gravel. You’ll live with one or two plates gone, but eventually something critical fails.
To reliably live beyond 70, we’d already need to cure dementia (we’re still not sure what many types are) and cancer (unlikely for a while yet); that’s not even getting into solving the problem of restoring lost function (which we’re really bad at).