Abstract
According to the latest surveys, about 2.3 billion people used licit drugs and 275 million used illicit drugs worldwide in 2015. The disability adjusted life years (DALYs) estimate indicated a loss of 132.6 million years due to licit drug use and 28 million years due to illicit drug use in 2015. The multifactorial character of substance use disorders includes genetic, psychosocial factors…