I don't know, muscle atrophy, cancer etc. are all mostly caused by aging. The current paradigm is kind of whack a mole which won't take us very far.

We need to understand the aging better still like what is actually going on and what are the main drivers (even here is dispute among scientists)

You're saying this as if there were no research going on about aging. We know why aging happens. That doesn't mean we can just stop or reverse the process, or that it is even possible to do so.