New Survey Reveals Increase in Marijuana Use Among U.S. Adults

marijuana use

A new study reveals an increase in the number of U.S. adults using marijuana, according to an Aug. 31, 2016, report at

The study, published in The Lancet Psychiatry, was led by Dr. Wilson M. Comptom of the National Institute on Drug Abuse at the National Institutes of Health.

Based on data from an annual government survey of 596,500 U.S. adults, the study analyzed the number of those who said they had used marijuana within the past year. That number increased from 10.4 percent in 2002 to 13.3 percent in 2014. From those percentages, estimated 21.9 million U.S. adult users in 2002 grew to 31.9 million in 2014.

The research also found 1.4 million began using marijuana in 2014, compared to 823,000 who began in 2002.

What surprised Comptom the most, however, was the “more than doubling of the number of adults using marijuana daily or near daily.” The ranks of such frequent users jumped to 8.4 million in 2014, from 3.9 million in 2002.

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