Red wine, grapes, raspberries, and peanuts are among the foods rich in resveratrol.
In today's edition of Nature, another team of scientists says it has developed chemicals that behave like a souped-up version of resveratrol in lab tests on diabetic mice.
Like resveratrol, the lab-made chemicals activate a gene called SIRT1, making the diabetic mice more sensitive to insulin.
But the newly developed chemicals are 1,000 times more potent than resveratrol.
Those chemicals haven't yet been tested on people or in long-term experiments, but they "hold promise" as a treatment for type 2 diabetes, write the researchers.
They included Christoph Westphal, MD, PhD. He's the CEO of Sirtris Pharmaceuticals, which made the compounds tested in the study. Scientists from Harvard Medical School and the University of California at San Diego also worked on the study.