Drug Use in Prison
(Drug Use in Prison) "Studies carried out in 15 European countries since 2000 estimated that between 2% and 56% of prisoners have ever used any type of drug while incarcerated, with nine countries reporting levels in the range 20–40% (3). The drug most frequently used by prisoners is cannabis, followed by cocaine and heroin. Estimates of heroin use while in prison ranged from 1% to 21% of prisoners (4). The wide variation in prevalence levels between countries may reflect methodological differences in data collection and reporting.