Scientists reverse the aging process in mice
guardian.co.uk
guardian.co.uk
A rabbi recently told me that the shortening of life expectancies started after Noah and the flood, and that Abraham was the first person who's physical appearance began to decline in line with his age, which he wanted - he wanted to look his age. He also said that after the flood something happened to us, but biologically we're capable of living a lot longer.
But maybe thats a little less personal observation from the rabbis perspective, and a little more bible/gospel based hearsay ?