In the last decade chocolate, or more precisely cocoa, has been studied for its health benefits. A new study published this month the Journal of Hypertension supported previous evidence that cocoa, rich in antioxidants supports proper blood vessel function and may protect against cardiovascular disease.
Cocoa contains a high level of flavonols, a particular antioxidant that is also high in wine and tea. Flavonols have been proven to improve blood vessel tone via nitric oxide. They help to relax the blood vessels in the peripheral and improve measurements of cardiovascular health.
In this study 34 health adults were given a flavonol rich cocoa drink for 5-6 days. They were divided into two groups based on age: Group 1 under 50 years, Group 2 over 50 years old. Baseline measurements including blood pressure were taken as well as after 5-6 days of consuming the drink.
In both groups measurements of blood vessel control were improved, including blood pressure. The effect seemed to be stronger in Group 2, the over age 50 participants. Interestingly it is also older individuals who have a greater risk of cardiovascular disease because of declining blood vessel control.
In conclusion the authors state that flavonol rich cocoa improves blood vessel tone and control in older individuals more than younger ones. In this study all participants were healthy and free from disease, and further studies that measure effectiveness in coronary artery disease patients will give more insight into the effect.
It is also important to note that the cocoa used in the study was specially formulated to be high in flavonols and is not the cocoa from our favorite candy bar at the grocery.
Posted by Dr. Christina Gutierrez on August 28, 2006 12:40 PM
