Marijuana

Brief Description

Marijuana is a dry, shredded green and brown mix of leaves, flowers, stems, and seeds from the hemp plant Cannabis sativa. In a more concentrated, resinous form, it is called hashish, and as a sticky black liquid, hash oil. The main psychoactive (mind-altering) chemical in marijuana is delta-9-tetrahydrocannabinol, or THC. Learn more about marijuana

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Statistics and Trends

 

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Monitoring the Future Study: Trends in Prevalence of Marijuana/ Hashish for 8th-Graders, 10th-Graders, and 12th-Graders; 2013 (in percent)*
Drug Time Period 8th-Graders 10th-Graders 12th-Graders
Marijuana/ Hashish Lifetime 16.50 35.80 45.50
Past Year 12.70 29.80 36.40
Past Month 7.00 18.00 22.70
Daily 1.10 4.00 6.50

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National Survey on Drug Use and Health: Trends in Prevalence of Marijuana/ Hashish for Ages 12 or Older, Ages 12 to 17, Ages 18 to 25, and Ages 26 or Older; 2012 (in percent)*
Drug Time Period Ages 12 or Older Ages 12 to 17 Ages 18 to 25 Ages 26 or Older
Marijuana/ Hashish Lifetime 42.80 17.00 52.20 44.40
Past Year [12.10] 13.50 31.50 [8.60]
Past Month 7.30 [7.20] 18.70 5.30

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