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Dark chocolate boosts men's health

London, Dec 23, 2012, PTI:

Eating dark chocolate can protect against heart disease and stroke, scientists claim, adding that men derive more health benefits from it than women. The benefits include anti-clotting effects which are activated within two hours in both sexes, and with greater impact in men.

Having a piece of chocolate a day could be the secret to staying heart healthy, according to scientists at the University of Aberdeen Rowett Institute of Nutrition and Health, the  Daily Mail reported.

“It’s an acute effect in the body that men and women both benefit from, but it’s more diluted in women. These findings are not a carte blanche to eat chocolates as they are extremely rich in fat and sugar,” lead researcher Dr Baukje de Roos, from the Rowett Institute, said. “But probably eating a little bit of dark chocolate containing at least 70 per cent cocoa every day is going to do more good than harm,” she added.

Researchers from the Rowett joined Institute of Food Research in Norwich to study what happened in the blood of 42 healthy volunteers, 26 women and 16 men, after they ate dark chocolate specially boosted with cocoa extract. They were investigating the effect on blood clotting, the result of over-activity of platelets that stick together blocking blood vessels that can lead to heart attacks and strokes.


Compounds called flavanols which are found in cocoa, tea and apples, appear to have a beneficial effect on platelet function - and they are higher in cocoa-rich chocolate. The platelet function of people eating the enriched dark chocolate was compared with platelet function in those who had eaten dark chocolate. 

Blood and urine samples were taken and then analysed two hours and six hours after chocolate consumption. The scientists  discovered the specially enriched dark chocolate significantly decreased both platelet activation and aggregation in men, but only cut platelet aggregation in women.

The strongest effects were seen two hours after the chocolate had been eaten, said the report. They found that the specially enriched dark chocolate significantly increased bleeding time after six hours in both men and women, possibly caused by the metabolites that human bodies produce from flavanols.

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