U.S. leads world in substance abuse, WHO finds

WASHINGTON (Reuters) - The United States leads the world in rates of experimenting with marijuana and cocaine despite strict drug laws, World Health Organization researchers said on Tuesday.

Countries with looser drug laws have lower rates of abuse, the researchers report in the Public Library of Science journal PLoS Medicine.

The survey of 54,000 people in 17 countries found that 16 percent of people in the United States had used cocaine in their lifetimes -- far higher than the next highest rate, found in New Zealand, where 4.3 percent of people reported having used cocaine.

More than 42 percent of Americans admitted to having tried cannabis, closely followed by 41 percent in New Zealand, Dr. Louisa Degenhardt of the University of New South Wales in Sydney, Australia and an international team of colleagues found.

Americans were also the most likely to have smoked, with 74 percent saying they used tobacco at some time in their lives, although current smoking rates are far lower at 21 percent.

http://www.reuters.com/article/domesticNews/idUSN0125478320080701