A daily dose of dark chocolate noticeably improves symptoms of chronic fatigue syndrome, researchers have discovered. Scientists speculate that the chocolate may boost brain serotonin levels in sufferers, who reported significantly less fatigue when they ate 45 grams a day of chocolate high in cocoa content.
Dark chocolate is high in polyphenols, which have been linked to health benefits such as a reduction in blood pressure. The study involved only 10 patients, but several of them experienced dramatic improvement. Two patients were even able to return to work.