An organic compound used in many products, most notably intoxicating drinks. Alcohol addiction is known as alcoholism. The first 12-step program was devised to deal with that malady. More affects the body in two stages. In the first phase, it induces a pleasant feeling. However, once the blood alcohol concentration passes the 0.05 level this change. This is where unpleasant effects such as hangovers and nausea come on.