I watched a BBC documentary today The Truth About Looking Young where amongst other things (sun damage and the use of spf) it was mentioned that people with lower glucose blood levels age better.
BBC Documentary 2015 The Truth About Looking Young National Geographic Documentary
https://www.youtube.com/watch?v=52nA4xswWjU
BBC Documentary 2015 The Truth About Looking Young National Geographic Documentary
https://www.youtube.com/watch?v=52nA4xswWjU