Heroin use was highest in Mpumalanga and Limpopo, while alcohol abuse dominated in-patient centres in KwaZulu-Natal, the Northern Cape and the North West.

A WHO report released in May defined heavy or binge drinking as consuming at least four beers or more in one sitting. The report found that about four percent of South African had drank heavily at least once in the past month. This percentage was about four times higher in men.