is aging genetically controlled.

I remember reading that our genes get shorter as we age. Literally the gene
strands lose pieces from the ends, meaning that older cells begin to lose
some capabilities. For example the gene that codes to make collagen, the
connective tissue in skin that keeps it soft and pliable, falls off some
skin cells as we get older. So gradually more and more tissues lose the
ability to make collagen, and our skin begins to look wrinkled or weathered.
It is not clear yet all the functions that are lost in this process, but
advances in human genomics will elucidate more of these over time. Some may
be correctable, through medications for example, but others, like production
of collagen in the right places, may not. So aging is an actual biological
process, not just an accumulation of incidental damage over time.