After cannabis, prescription drugs are the most commonly abused substances. The INCB report said the drop in drug use among people aged 12-17 "is mostly attributed to a decrease in the abuse of cannabis; however there has also been a decrease in the abuse of almost all other drugs." Among young adults, aged 18-25 years, abuse fell in all drug categories except pain relievers, it said. UNITED NATIONS € In the United States, the world's largest market for illicit drugs, the number of teenagers abusing them fell between 2001 and 2007, the United Nations said on Thursday. Diplomat, was that among American teenagers "it seems that drug abuse has gone down 24 percent in the last eight years." There are an estimated 19.9 million Americans aged 12 years or older who are considered current illicit drug users, according to a 2007 U.S. International Narcotics Control Board said in its annual report. But the number of people abusing prescription drugs rose, the U.N. "The positive aspect," said Edouard Levitsky, an INCB member and former U.S.

The report said the non-medical use of prescription pain relievers in the last.