from Tufts University Health & Nutrition Update March 9, 2012 Study funded by Barry Callebaut, world’s largest chocolate maker Published in Physiology and Behavior
A new study finds that a chocolate drink high in flavanols, the antioxidants in dark chocolate linked to a healthy heart, helped subjects complete memory-related tasks with less brain strain.
Sixty-three volunteers, age 40-65, participated in the study. The randomized, controlled, double-blind experiment compared the effects of three strengths of flavanol-rich beverages, ranging from 500 mg per serving to almost zero mg.
There were no differences among the three groups in tests of mental accuracy and reaction time. But when CT scans monitored brain activity during the tests, volunteers in the middle and top groups of flavanol supplements expended less mental effort than those in the lowest group.
My Take on the study: Yes, it was funded by dollars that had an economic interest in the results, but the results were published in an unbiased journal that examined both the testing procedure and the results.