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The GuardianGlobal opium production fell by 38% in 2010 and cocaine cultivation continued to decline, according to the annual UN report on the world drug market.
The report said that while the global markets for cocaine, heroin and cannabis had declined or remained stable, the production and illicit use of prescription opioid drugs and new synthetics known as legal highs, which mimic the effects of traditional drugs, had increased sharply.
The UN estimates that 210 million people, about 5% of the world's population, used some kind of illicit drug last year at least once. The most popular drug remains cannabis, with 170 million users. An estimated 39 million "problem drug users" use heroin, cocaine and other class A substances.
Sandeep Chawla, director of policy of the UN office of drugs and crime, said the rise of new synthetic drugs reflected their lack of dependence on plant cultivation. Instead they could be produced from readily available industrial chemicals close to potential consumers without the need to set up global trafficking chains.
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http://www.guardian.co.uk/world/2011/jun/23/opium-cocaine-drugs-production-decline