According to the World Drug Report 2022 of the United Nations Office on Drugs and Crime (UNODC), around 284 million people between the ages of 15 and 64 used drugs worldwide in 2020, representing an increase 26% compared to the previous decade.
The figure increases considerably if we include alcohol or tobacco.
Substance dependence has a multifactorial origin: environmental, biological, genetic and psychosocial factors intervene.
The use and abuse of substances such as alcohol, cocaine or cannabis is associated with numerous mental and behavioral disorders of various kinds such as aggression, depression, anxiety, and even psychotic episodes in which there is a loss of contact with reality as well of having negative social consequences such as family conflicts, sentimental breakups, labor and economic problems, risk behaviors, etc.
On other occasions, the addiction is not to substances but to behaviors, such as pathological gambling, gambling addiction.
On the other hand, numerous studies also show a higher prevalence of substance use in people with mental disorders such as depression, anxiety, ADHD (attention deficit hyperactivity disorder), personality disorders, bipolar disorder, etc. .