A study of Italians who consume a diet rich in resveratrol（白藜芦醇） -- the compound found in red wine, dark chocolate and berries -- finds they live no longer than and are just as likely to develop cardiovascular disease or cancer as those who eat or drink smaller amounts of the antioxidant. The story of resveratrol turns out to be another case where you get a lot of hype（大肆宣传） about health benefits that doesnt stand the test of time, says Richard D. Semba, M.D., M.P.H., a professor of ophthalmology at the Johns Hopkins University School of Medicine and leader of the study described May 12 in JAMA Internal Medicine. The thinking was that certain foods are good for you because they contain resveratrol. We didnt find that at all.Despite the negative results, Semba says, studies have shown that consumption of red wine, dark chocolate and berries does reduce inflammation in some people and still appears to protect the heart. Its just that the benefits, if they are there, must come from other polyphenols or substances found in those foodstuffs, he says. These are complex foods, and all we really know from our study is that the benefits are probably not due to resveratrol.The new study did not include people taking resveratrol supplements, though few studies thus far have found benefits associated with them.Semba is part of an international team of researchers that for 15 years has studied the effects of aging in a group of people who live in the Chianti region of Italy. For the current study, the researchers analyzed2 24 hours of urine samples from 783 people over the age of 65 for metabolites of resveratrol. After accounting3 for such factors as age and gender4, the people with the highest concentration of resveratrol metabolites were no less likely to have died of any cause than those with no resveratrol found in their urine. The concentration of resveratrol was not associated with inflammatory markers, cardiovascular disease or cancer rates.Semba and his colleagues used advanced mass spectrometry to analyze1 the urine samples.The study participants make up a random5 group of people living in Tuscany where supplement use is uncommon6 and consumption of red wine -- a specialty7 of the region -- is the norm. The study participants were not on any prescribed diet.Resveratrol is also found in relatively8 large amounts in grapes, peanuts and certain Asiatic plant roots. Excitement over its health benefits followed studies documenting anti-inflammatory effects in lower organisms and increased lifespan in mice fed a high-calorie diet rich in the compound.The so-called French paradox, in which a low incidence of coronary heart disease occurs in the presence of a high dietary intake9 of cholesterol10 and saturated11 fat in France, has been attributed to the regular consumption of resveratrol and other polyphenols（多酚类） found in red wine.
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1 analyze vt.剖析，分析 参考例句： We should analyze the cause and effect of this event.大家应该剖析这场事变的因果。 The teacher tried to analyze the cause of our failure.老师设法剖析大家失败是什么原因。
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