Cocoa flavanol supplementation may reduce cardiovascular risk Scientists conduct first large-scale study to test long-term effects of cocoa flavanol supplementation in preventing cardiovascular disease. It showed that cocoa flavanols may have a protective effect on the cardiovascular system.. In articles published in The American Journal of Clinical Nutrition, a team led by Howard Sesso, MD, and Joanne Manson, MD, reveal the main results of supplementation.

While none of the supplements significantly reduced the primary outcome of total CV events, people who received cocoa flavanol supplements had a 27% lower CV mortality rate..

“When we look at the totality of evidence, both primary and secondary, we see that cocoa flavanol supplementation can reduce important cardiovascular events, including cardiovascular death,” says Sesso.. "

Previous research has shown the benefit of flavanols, compounds found in several plant foods including cocoa, tea, grapes and berries.. Small, short-term studies have shown that cocoa flavanols have a positive effect on the cardiovascular system in high blood pressure and dilation of blood vessels..

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