For decades, we've all heard the warnings about how excessive drinking can turn your liver into Swiss cheese, and cause all sorts of other awful physical woes as well. But when scientists actually got around to studying the death rates of drinkers and non-drinkers, they made a startling discovery. For reasons that aren't entirely clear, abstaining from drinking actually tends to increase your risk of dying.
In a study published in 2010 in the scientific journal Alcoholism: Clinical and Experimental Research, University of Texas at Austin psychologist Charles Holahan found that over a 20-year period, 69 percent of abstainers died. That actually was higher than the 60 percent death rate for heavy drinkers. But the longest-lived group among the 1,824 study participants was composed of moderate drinkers, only 41 percent of whom died in that period [sources: Holahan, et al., Cloud].
Some might argue that many of the abstainers were former alcoholics so no wonder more of them died. Holahan and his co-researchers did a model controlling for former problem drinking, existing health problems and other factors. They found that even after the adjustments, "abstainers and heavy drinkers continued to show increased mortality risks of 51 and 45 percent, respectively, compared to moderate drinkers."