The document outlines the physical, psychological, and social harms of substance misuse. It describes the major effects and risks of opiates, alcohol, and stimulants. Opiate misuse can lead to overdose, health issues, and social problems like crime and unemployment. Alcohol misuse poses risks of overdose, accidents, withdrawal seizures, and social harms. Stimulants may cause cardiovascular and mental health issues as well as risky behaviors and psychological addiction. All substances discussed can negatively impact users' physical health, mental wellbeing, and social relationships.