Dark chocolate rich in flavonoids -- plant-based antioxidants -- appears to protect against skin cancer and promote healthy skin, a study by German researchers found.
The study involved 24 women who added hot cocoa to their breakfasts daily for about three months. Half received cocoa that contained 329 milligrams of flavanols while the rest received a placebo cocoa that contained only 27 mg of flavanols per serving.
At the end of the study results showed that women who drank the flavonoid-rich cocoa:
Had 15 percent less skin reddening after UV light exposure after six weeks of drinking the cocoa, and 25 percent less after 12 weeks
Experienced a doubling of blood flow in the skin in tissue 1 millimeter below the surface, and a 37.5 percent increase in tissue 7 to 8 mm deep
Had skin that was 16 percent denser, 11 percent thicker, 13 percent moister, 30 percent less rough and 42 percent less scaly, compared to the beginning of the study
The researchers suspect the flavonoids may work by increasing blood flow and fighting free radicals.
The cocoa used in the study is not yet commercially available, but researchers said the flavonoid amounts used were similar to those found in a little over three ounces of dark chocolate.