NIDA for Teens: The Science Behind Drug Abuse
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How Many Teens Use Marijuana?

Marijuana is the most common illicit drug used in the United States by teens as well as adults. The growing belief by young people that marijuana is a safe drug may be the result of recent public discussions about medical marijuana and the public debate over the drug’s legal status. In addition, some teens believe marijuana cannot be harmful because it is “natural.” But not all natural plants are good for you—take tobacco, for example.

See the most recent statistics on teen drug use from NIDA’s Monitoring the Future study below:

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Monitoring the Future Study: Trends in Prevalence of Marijuana/ Hashish for 8th Graders, 10th Graders, and 12th Graders; 2015 (in percent)*
Drug Time Period 8th Graders 10th Graders 12th Graders
Marijuana/ Hashish Lifetime 15.50 [31.10] 44.70
Past Year 11.80 25.40 34.90
Past Month 6.50 14.80 21.30
Daily 1.10 3.00 6.00

For more statistics on teen drug use, see NIDA’s Monitoring the Future study.