Let's try to temper this discovery (not so much new as newly re-emphasized by this work) with the understanding that, it is only one of many contributing factors. Surviving longer allows us to encounter a plethora of new-&-improved woes for old folks. Sure, getting out and soaking up more rays is a good thing when properly managed, but let's not go overboard and attribute to one cause that which is complexly determined.
Memory's the first thing to go. I forget what the second is.