Resveratrol, a natural polyphenol found in a variety of vegetation such as grapes (skins) and Japanese knotweed, has been the focus of many studies over the last several years. Believed to affect a wide variety of processes within the body, resveratrol has been shown to produce many health related benefits. A recent study published in the British Journal of Nutrition (April 2011) reported a positive affect on insulin resistance and oxidative stress in humans.. Researchers recruited 19 (male) type-2 diabetics to receive a supplement containing 10 mg of resveratrol or placebo daily, for 4 weeks. When compared with the placebo group, those receiving resveratrol showed significant improvements in insulin sensitivity and blood glucose levels, as well as delayed appearances of glucose peaks after test meals.