There have been many miracle cures and potions touting eternal youth as not just a vision, but something that consumers (you and me) can actually use and is available is the human growth hormone. (find out some information at http://www.humangrowthhormone.org).
The interest in this elixir seems to stem back to 1990’s study in New England Journal of Medicine, in which "all the men showed statistically significant increases in lean body mass and bone mineral, while the control group did not." This was opposite of the typical changes that might be expected in a similar group. It seems that at this point, a kind of myth started that it could reverse aging! Of course, anti-aging agent became a part of the diet/health folklore, with little basis in fact.
Don’t start messing with HGH… because there are so few studies that show any real benefits, and side-effects are possible: "joint swelling, joint pain, carpal tunnel syndrome, and an increased risk of diabetes". Do your research. Don’t believe the hype. Pay attention to the doctors who practice REAL medicine.