sgarecfinders | Older McKay or Sheppard

Are there any fics where either or both McKay/Sheppard are aged, but not through the Wraith? I've read Gaia's stuff with an aged Rodney and a few others, but they were all due to the Wraith. Any where the aging comes from some other means? Love McShep, but friendship is good, too. Thanks :)

Edit: There are some links in the comments here for some great fics, however, what I'm looking for are not really future fics. I was wondering if there were fics where something happens to current John/current Rodney so that they age. It's still the here and now, but John or Rodney or both are older. There are many kid fics dealing with the aftermath of de-aging so I wondered if there was something like that with them aging. Thanks :)