Substance use refers to the consumption of various substances, including drugs and alcohol, for recreational or medicinal purposes. This can involve legal substances like alcohol and prescription medications, as well as illegal drugs such as cocaine or heroin. People may use these substances to alter their mood, relieve pain, or escape from reality. While some individuals use substances responsibly, others may develop patterns of misuse that can lead to addiction. Substance use can have significant effects on physical and mental health, relationships, and overall well-being. Understanding the risks associated with substance use is essential for making informed choices.