Drug use refers to the consumption of substances that alter physical or mental states. These substances can be legal, such as alcohol and prescription medications, or illegal, like cocaine and heroin. People may use drugs for various reasons, including recreation, pain relief, or to cope with stress. The effects of drug use can vary widely, depending on the substance and the individual. Some drugs can lead to temporary feelings of euphoria or relaxation, while others may cause harmful side effects or addiction. Understanding the risks associated with drug use is essential for making informed choices.