Substance abuse research focuses on understanding the causes, effects, and treatment of addiction to drugs and alcohol. This field examines how substances like alcohol, opioids, and stimulants impact the brain and behavior, as well as the social and economic factors that contribute to substance use disorders. Researchers also explore effective prevention and intervention strategies, aiming to reduce the prevalence of addiction in communities. Studies may involve clinical trials, surveys, and analysis of public health data to identify trends and develop evidence-based practices for treatment and recovery.