The CDA reported on the following trends: Primary substances of abuse: alcohol remains the dominant substance of abuse throughout the country. Gauteng, Mpumalanga and Limpopo have the highest rate of alcohol consumption. Cannabis is and remains the primary illicit drug of abuse between 29% and 62% of all patients reporting it. Cocaine treatment admissions had shown a decrease in a number of areas but showed a slight increase in KwaZulu-Natal and the Eastern Cape. Heroin use was stable in KwaZulu-Natal.