Are wine, chocolate, coffee: forbidden joys? Have a look at this viewpoint on this exciting topic authored by Prof. Thomas F. Lüscher.
'Wine is truly a joy, but at best neutral when consumed in moderation. Chocolate is a joy for our CV system, if consumed in dark, bitter form. And coffee? It wakes us up, less so, if you drink it regularly, and at that dose of up to 4 cups a day, might even be protective.'