According to intelligence sources, over 30 percent of North Korean athletes involved in a 2012 sporting event tested positive for drug use.
Drug use by residents of North Korea began to increase during the 2000s, according to security officials. Major drug factories are located in Pyongyan and Kangwon Province.
Previously, drugs were produced to be trafficked to overseas markets in order to generate revenue for the North Korean government.
Source: “Prostitution, Drug Abuse Spread in N.Korea,” Chosun Ilbo, August 19, 2013.