Red wine colors your tongue, but your teeth may not mind a little juice of the vine.

Sipping moderate—keyword, moderate—amounts of wine on a regular basis can be good for your colon, heart, immune system and mental health. Wine, after all, was at the core of the so-called “French paradox,” or the observation in 1980 that cardiovascular disease was far less prevalent among the French, despite their penchant for saturated fats, low activity levels and cigarettes. The outlier: The French als