Resveratrol shows activity against insulin resistance and retinal disease

Anti-aging compound appears to function in multiple ways

A naturally occurring chemical found in grapes and other foods may help reverse some of the ills associated with aging and being overweight, new studies suggest.

The chemical, resveratrol, has been shown to lengthen the life span of yeast and improve health in laboratory animals, but scientists do not yet know whether the substance might also benefit humans.