Dark chocolate is in the news again with research that suggests that eating 100g of dark chocolate every day for 2 weeks can reduce your risk of heart disease. A study was conducted on a small group of adults with an average age of 44. All participants had high blood pressure and impaired glucose tolerance.  The study was conducted by L'Aquila university, Italy and Tufts University, in the US.  The partcipants were split into 2 groups, one group receiving 100g of either dark or white chocolate daily over a 15 day period.  After the 2 week period particpants on the dark chocolate regime had lower blood pressure, and decreased insulin resistance (which means improved blood sugar control). Those on the white chocolate diet did not experience these improvements.