Why are drinkers smarter? That’s the conclusion of a study I read about recently. "A study of more than 6,000 Londoners ranging in age from 40 to 68 found that drinkers in general performed better than teetotalers on tests measuring such things as verbal fluency and inductive reasons. The study indicated drinkers performed better whether they had one drink a week or 30-plus drinks a week. Even occasional drinkers did better on the tests than non-drinkers, leading the researchers to…