Here's an interesting article about why some people seem to age more slowly than others. Apparently, the length of your telemeres – tiny biological clocks at the ends of chromosomes – get shorter over time, until cells die. Here's the punch line: some people have longer telemeres.

Scientists have found a 'Peter Pan gene' that could explain why some people remain baby-faced while others become old before their time.
Millions of Britons are blessed with DNA that makes them look up to eight years younger than their peers.

Read more about it (but beware, there's a scary photo of Mick Jagger) -- ...Thank the Peter Pan Gene (dailymail.co.uk)