Even though Mercola is a salesman he's probably got the nitty gritty on aging and what would combat it. I remember him talking about longevity spirals/coils in an article long ago but would have no idea how to retrieve it now, I think it was related to aging though. I bet if you key worded 'aging' in his search engine you'd get some good results. Most of Mercola's products IMO are bullshit, but the info he provides is gold by and large. I've learned sooo much from his articles and newsletters. Just sift through it and weed out the bullshit.
You might also google longevity spirals or coils, can't remember the term exactly but it was something to the effect that certain stimuli cause these coils to shorten and they're related to longevity and I would assume, aging.
You might also look in to monatomic gold. I've been learning about the Annunaki who supposedly came here looking for gold to repair their atmosphere but it also helps with longevity and/or aging. Can be gotten from certain foods.
For more supple skin you might consider raw cartilage/collagen from pastured animals. I try to eat some whenever it's avilable, from joints of what is sold as soup bones or from oxtail.
I'd certainly like to know too! I want nice, elastic skin when I'm 60 and 70.
A reasonable amount of sun is pretty important too I think. Not too much, not too little.
Anthony Anderson AKA the Raw Model might shed some light, dude is 30 but to me looks like he's in his early 20's. Cool fella, from my neck of the woods here in MN. He's no vegan and likes his pastured animal foods though I'm not sure how much raw meat he's in to. Inspiring guy!
EDIT: Here's something anyway from Mercola, haven't vetted or factchecked, read critically...
http://articles.mercola.com/sites/articles/archive/2010/03/18/see-my-presentation-at-the-antiaging-conference.aspxEDIT2: Here's the one about the coils, they are telomeres...
http://articles.mercola.com/sites/articles/archive/2010/02/23/science-finally-reveals-how-you-can-actually-revese-aging.aspx This is interesting because when I was thinking about things that show signs of health, one is glossy hair or a glossy coat, which eggs seem to really help with. Well turns out the sulphurous foods like raw eggs can help to reverse aging, at least according to Merc.