Substance abuse and crime: considerations for a comprehensive forensic assessment.

There is a strong link between drug use and crime, but this relationship is complex. Drug use does not necessarily lead to an increase in crimes, such as theft, rape or assault, even among regular users or addicts. However, in cases of individuals who consume drugs excessively and commit crimes, both factors are linked. Poverty, personality disorders, social and cultural variables, relationships with other users and previous incarceration or drug use are all factors. These issues play an important role in understanding the risk of crime and drug use. Most addicts should be held liable for most criminal behaviour motivated by addiction, but that addiction can, in some cases, affect one's capacity for self-control over one's actions. This paper examines the current response of the Spanish Criminal Justice System to various aspects of drug abuse, focusing on court decisions related with the nature and enforcement of drug laws. It also addresses aspects of criminal responsibility for drug abuse and drug-related crimes and suggests legislation on drugs, sentencing alternatives for drug offenses, and drug treatment options. Expert evidence plays a crucial role in this area in the court.