So is the medical journal the Lancet correct that the only safe amount of booze to drink is zero? That was the upshot of a big global study the prestigious British journal published recently.

What about the opposite idea, that moderate drinking might actually be good for you? A respected federal agency just got itself into a credibility scandal by signing on to, then cancelling, a $100 million, decade-long Big Alcohol-funded-and-steered study with more than 7,800 prospective participants. It proposed to test the conventional wisdom that one or two daily drinks may be beneficial to health....