Complications of alcoholism arise after long periods of heavy drinking or binge drinking, even though usually, drinking alcohol initially elevates the person's mood. A chronic drinker's nervous system will become depressed and the drinker will become sedated by alcohol. Alcohol may undermine a person's judgment; it can lower inhibitions and alter the drinker's thoughts, emotions and general behavior. Heavy regular drinking can have a serious effect on a person's ability to coordinate his/her muscles and speak properly.