Dark Chocolate- Good for the Heart

 http://www.medicalnewstoday.com/articles/273374.php

Nutritionists have long said that eating dark chocolate in moderation can be good for our health. Now, researchers have discovered why. It may reduce the risk of atherosclerosis - thickening and hardening of the arteries - by restoring flexibility of the arteries and preventing white blood cells from sticking to the blood vessel walls.

Cocoa reduces blood pressure and insulin resistance and improves endothelium-dependent vasodilation in hypertensives. Hypertension. 2005 Aug;46(2):398-405.

Effect of dark chocolate on arterial function in healthy individuals. Am J Hypertens. 2005 Jun;18(6):785-91.

Suppressive effect of cocoa powder on atherosclerosis in Kurosawa and Kusanagi-hypercholesterolemic rabbits. J Atheroscler Thromb. 2005;12(1):20-8.