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The following benefits are found in dark chocolate containing a minimum 70% cocoa, not in the heavily processed milk and white chocolates.
Dark chocolate with it high cocoa content is a rich source of the flavonoids epicatechin and gallic acid which contain cardio protective properties.
Cocoa butter contains small amounts of the plant sterols sitosterol and stigmasterol, which may help inhibit the absorption of dietary cholesterol.
Unlike the saturated fats found in meat and dairy, the saturated fats in dark chocolate do not elevate cholesterol levels.
The flavonoids in chocolate prevent the excessive clumping together of blood platelets that can cause blood clots.
Chocolate contains significant amounts of the amino acid arginine which is required in the production of nitric oxide. Nitric oxide causes blood vessels to dilate, which helps to regulate blood flow, inflammation and blood pressure.Read more at Suite101: How Healthy is Dark Chocolate ?: Benefits and Disadvantages http://food-facts.suite101.com/article.cfm/how_healthy_is_dark_chocolate_#ixzz0multcu1A