Historical and social view of drinking

Many of us participate in Dry January — and go right back to drinking during the other eleven months of the year. Sure, Dry January can be a great jumping off point, but long-term health benefits aren't going to come with quitting the booze for one month. We speak to Catharine Fairbairn, a psychologist who runs an alcohol research lab, about what people should be doing if they really want to change their drinking habits. And we ask Dan Malleck, a medical historian specializing in alcohol and prohibition: Why do people drink, anyways? And is it really that bad for you?