I'm not a biologist, but I have medical friends (and a partner who's a neuropharmacologist - whatever that means) who are constantly raving about new lines of investigation nd remedy for common and nasty diseases. My missus works in cellular aging and reckons that this has pushed the field forward so massively that research can only just keep up!
If you're interested (and from the UK) then the author of that column is on iplayer with a documentary (part one of two, the next one is tonight on BBC4 - I think). Really fascinating stuff.
An interesting aside (if you can't watch said documentary) is him going to India where it's possible to accurately place his mothers' family roots by analysing his DNA.