Nearly half of the people suffering from schizophrenia also present with a lifetime history of substance use disorders (SUDs).1,2 This rate is much higher than the one seen in the general US population (table 1 provides prevalence estimates for the most frequently abused substances in schizophrenia patients compared with the general population),11,12 which suggests that in addition to factors driving SUD in the general population, other factors are increasing the risk in schizophrenia.
