People use substances for many different reasons. Someone may use alcohol to wind down at the end of a long, busy week. A teenager may use cannabis with friends to be social. Someone who has been injured may use opioid medication to manage their pain.
People can use substances – in these ways and others – without experiencing substance use challenges. Substances can also cause harm without addiction. For example, someone could use an illicit substance for the first time and experience a fatal overdose.