This document discusses the causes and consequences of drug abuse. It identifies physiological, psychological, and sociological causes, including using drugs to relieve pain or tension, influence from family and peers, and socioeconomic factors. The consequences for individuals include both short-term effects like euphoria or crashes as well as long-term health problems such as respiratory disorders, liver disease, infectious diseases from needle sharing, and systemic issues. Abuse can also lead to accidents, risky behaviors, crime, and death.