In the psychology context, a substance can refer to a chemical substance, such as a drug or medication, that is ingested or otherwise introduced into the body and can have an effect on a person's thoughts, emotions, and behaviors. Substances can be legal or illegal, and they can be used for a variety of purposes, including recreational, medicinal, or performance-enhancing.
- Prescription medications (e.g. antidepressants, antipsychotics, anxiolytics)
- Illegal drugs (e.g. marijuana, cocaine, amphetamines)
- Performance-enhancing drugs (e.g. steroids)
Substance use and abuse can have a range of effects on an individual's mental health and well-being, and can sometimes lead to substance use disorders, which are characterized by a pattern of problematic substance use that leads to significant impairment or distress. Substance use disorders can be treated with a combination of therapy, medication, and support from family and loved ones.