Illicit amphetamine (‘speed’) use linked to 5-fold heightened risk of psychosis
Risk evident across all age groups, especially among women and serial offenders
The illicit use of amphetamines, the stimulants commonly known as ‘speed’, is linked to a 5-fold heightened risk of psychosis, finds a 10 year study published online in the journal Evidence-Based Mental Health.
This increased risk was seen across all age groups, but was especially noticeable among women and those who had been arrested several times for possession of the drug, the findings show.
The estimated global prevalence of amphetamine use is less than 1%, but around 1 in 10 users become addicted.