'Elixir of Life' Discovered

Italian researchers say they've found an "elixir of life" that helped mice live longer and may do the same for humans. The cocktail of amino acids—found in a protein powder favored by bodybuilders—extended the lifespan of middle-aged mice by 12%, the Telegraph reports. Mice who drank water containing the amino acids also had improved fitness and co-ordination, as well as stronger muscles.

The researchers believe that if people were to take a supplement containing the amino acids leucine, isoleucine and valine daily starting in middle age, they could look forward to a longer and healthier life. The same combination of amino acids have been shown to extend the lifespan of yeast, and the researchers say it's time for a large-scale study of its effect on humans. (Other researchers say sperm, grapefruit hold the key to the "fountain of youth." Click here for more.)