Marijuana use continues to increase among U.S. residents ages 12 and older, according to recently released data from the 2012 National Survey on Drug Use and Health (NSDUH).
- An estimated 31.5 million residents reported using marijuana in the past year, compared to approximately 25 million each year from 2002 to 2008.
- The nonmedical use of prescription drugs, which is the second most commonly used illicit substance, increased from an estimated 14.7 million users in 2011 to 16.7 million in 2012.
- The only other significant increase in drug use from 2011 to 2012 was for cocaine, which increased for the first time in six years (from 3.9 million to 4.7 million users).
- While heroin use is relatively rare and did not increase from 2011 to 2012, the estimated number of past year users in 2012 is nearly twice that of the estimated number in 2007 (669,000 vs. 373,000, respectively).