The Fred Hutchinson Cancer Research Center found that men who consumed four or more glasses of red wine per week had a 50 percent reduction in the risk of developing prostate cancer. They "found no significant effects – positive nor negative – associated with the consumption of beer or hard liquor and no consistent risk reduction with white wine, which suggests that there must be a beneficial compound in red wine that other types of alcohol lack. That compound … may be an antioxidant called resveratrol, which is abundant in the skins of red grapes.".