Very possible, your kidneys and/or liver. The kidneys and liver are the main organs for eliminating toxins from the body. When you drink alcohol it causes both of these organs to work "overtime". Alcohol also causes the body to dehydrate rapidly. For example, when you drink that cold brew after mowing the lawn it sends "shock waves" to your kidneys and liver. Better to have water or better yet, a sports drink and save the beer for the ball game. Small amounts of alcohol, such as red wine or a couple of beers a week, are actually good for the body. Excessive amounts of alcohol, or anything for that matter are always going to create an adverse effect, mentally and physically.