When consumed in moderation, alcohol is unlikely to cause long-term health problems. In fact, there is evidence that light to moderate drinking may benefit cardiovascular health. But according to Alcohol Research & Health , defining safe limits for alcohol consumption isn’t as easy as it sounds. Moderate drinking is defined as no more than one alcoholic beverage per day for women and no more than two drinks per day for men. However, differences in body weight, age, tolerance and health condition make it hard to establish general guidelines.