Red wine may not be as good for
you as hoped, say scientists who have studied the drink’s ingredient
that is purported to confer good health.
The team tracked the health of nearly 800 villagers from the Chianti
region of Italy to see if their local tipple had any discernable impact
.
They found no proof that the wine ingredient resveratrol stops heart disease or prolongs life.
Experts say more research is needed to get a definitive answer.
The British Heart Foundation is carrying out its own resveratrol study.
Many studies have sought to explain why there is a low incidence of
heart disease in France, despite many of its inhabitants eating a
high-fat diet.
Some put it down to moderate drinking of red wine.
Studies have shown that consumption of red wine, dark chocolate and
berries reduces inflammation, leading researchers to speculate that
their common ingredient, resveratrol, explains why.
But Prof Richard Semba, of the Johns Hopkins University School of Medicine, and colleagues found no evidence for this.
They chose two small towns in Tuscany as their test ground, and 783
elderly people who were living there agreed to take part in their
investigation.
The volunteers gave details about their daily diets as well as urine samples for measurement of their resveratrol intake.
During the nine years of the study, 268 of the men and women died, 174 developed heart disease and 34 got cancer.
But urinary resveratrol was not linked with death risk, heart disease risk or cancer risk.
Nor was it associated with any markers of inflammation in the blood.
Prof Semba said: “The thinking was that certain foods are good for
you because they contain resveratrol. We didn’t find that at all.
“The story of resveratrol turns out to be another case where you get a
lot of hype about health benefits that doesn’t stand the test of time.”
He says any benefits of drinking wine or eating dark chocolate or
berries, if they are there, must come from other shared ingredients. And
it’s not clear how much you might need to eat or drink.
“These are complex foods, and all we really know from our study is that the benefits are probably not due to resveratrol.”
Maureen Talbot, senior cardiac nurse at the British Heart Foundation,
said: “The results of this study, while interesting, will not change
the dietary advice we provide. People should continue to eat plenty of
fruit, veg and wholegrains.
“We recognise the need to learn more about the action of resveratrol
though, so are funding research into its reported disease-combating
properties and how it affects the heart and circulatory system.
“This research is vital as it could form the basis of future medicines.”
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