Alcohol and drugs have various adverse effects:
Alcohol and drug abuse lead to reckless and rash behaviour, depression, fatigue, aggression and violence.  It has several ill effects on the body, like damage to the liver and the nervous system, loss of weight and appetite, respiratory problems, heart failure, resulting coma and death. Use of needles may lead to transmission of AIDS. Consumption of excess alcohol by any family member can have devastating effects on the family. It leads to several domestic problems such as quarrels, frustrations, insecurity, etc. The person shows rash behaviour, violence, loss of interest in social and other activities. The person becomes a menace for family and society.