In 2015 about a quarter of a billion people used drugs. Of these, around 29.5 million people - or 0.6 per cent of the global adult population - were engaged in problematic use and suffered from drug use disorders, including dependence.
Opioids were the most harmful drug type and accounted for 70 per cent of the negative health impact associated with drug use disorders worldwide, according to the latest World Drug Report, produced by the United Nations Office on Drugs and Crime (UNODC).
The 2017 World Drug Report provides a global overview of the supply and demand of opiates, cocaine, cannabis, amphetamine-type stimulants and new psychoactive substances (NPS), as well as their impact on health.
It highlights the scientific evidence for hepatitis C causing greatest harm among people who use drugs; and brings into view further diversification of the thriving drug market, as well as changing business models for drug trafficking and organized crime.
The World Drug Report and further content is available here.