Researchers from Harvard Medical School just announced that resveratrol, a polyphenolic compound found in red wine, duplicates the life-extending benefits of caloric restriction in a yeast model. In a paper published in the August 24 online edition of the journal, Nature, they report that resveratrol was shown to extend the lifespan of yeast by up to 80 percent.-link

A review of the original investigations into resveratrol.