1) Decrease in blood pressure: Dark chocolate contains a good source of copper and magnesium, which is essential in maintaining blood pressure and regular heart beat.
2) Lower death rate from heart disease
3) Improved function of the endothelial cells
4) Improved overall digestion and stimulation to the kidneys.It contains flavonoids, which has been used to treat anemia, kidney stones and a poor appetite.

However, eating too much dark chocolate is not a good thing. It contains a lot of fat, calories and caffeine.