2009 National Survey on Drug Use and Health Summary
- In 2009, an estimated 21.8 million Americans aged 12 or older used illicit drugs in the past month. This represents 8.7 percent of the population aged 12 or older. Illicit drugs include marijuana/hashish, cocaine (including crack), heroin, hallucinogens, inhalants, or prescription-type psychotherapeutics used non-medically.
- The rate of current illicit drug use among persons aged 12 or older grew to 8.7 percent from 8.0 percent in 2008.
- Marijuana was the most commonly used illicit drug. In 2009, there were 16.7 million past month users. Among persons aged 12 or older, the rate of past month marijuana use was 6.6 percent in 2009, 6.1 percent in 2008 and 5.8 percent in 2007.
- In 2009, there were 7.0 million people aged 12 or older who used prescription type psychotherapeutic drugs non-medically in the past month. These compare 6.2 million in 2008.
- Among youths aged 12 to 17, illicit drug use rate increased from 9.3 percent in 2008 to 10.0 percent in 2009.
- The rate of current marijuana use among youths aged 12 to 17 increased to 7.3 percent in 2009.
- Between 2008 and 2009, the rate of current use of illicit drugs among young adults aged 18 to 25 increased from 19.6 to 21.2 percent, driven largely by an increase in marijuana use (from 16.5 to 18.1 percent).
- In 2009, 10.5 million persons aged 12 or older reported driving under the influence of illicit drugs during the past year. This corresponds to 4.2 percent of the population aged 12 or older. In 2009, the rate was highest among young adults aged 18 to 25 (12.8 percent).