Their (short & sweet) conclusion? Chocolate, cocoa & cocoa flavan-3-ols, compared to controls, improved flow mediate vasodilation, diastolic blood pressure, mean arterial pressure, triglycerides, fasting insulin & insulin resistance (as measured & calculated via HOMA-IR). Higher doses of flavan-3-ols were found to improve systolic blood pressure, too. The statistics for increasing HDL while lowering LDL weren't as impressive after taking into account the usual suspects.
Monty Python's The Meaning of Life, a wafer-thin mint anyone?