>>13716211They actually found a way to do this but it's untested in humans.
Scientists were able to pause aging in mice and even temporarily reverse aging to restore eyesight. IT was done via epigenetic manipulation.
Epigenetics is basically a study on how lifestyle and environment can effect how genes operate. Aging is apparently caused by your cells losing their ability to differentiate themselves, but this can be slowed, paused, or even reversed through lifestyle, and possibly through consuming select medications
https://www.youtube.com/watch?v=QRt7LjqJ45k 
