Potentially possible - but don't think I'd want to live that long if more than half of it was suffering with old age related difficulties :|
The days of our years are threescore years and ten; and if by reason of strength they be fourscore years, yet is their strength labour and sorrow; for it is soon cut off, and we fly away.
It's entirely possible. Why not? 50-60 yrs old was considered seriously old back in medieval times. I don't see why some fluke could double that today
Actually it wasn't! It's a common misconception but people when not killed by others often lived to ripe old ages! Child mortality massively skews the figures.