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20 December 2012

Marijuana use rising among high school seniors

Current - and in some cases, rising - levels of marijuana use by 8th, 10th and 12th graders are cause for concern, US health officials said.

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Current - and in some cases, rising - levels of marijuana use by 8th, 10th and 12th graders are cause for concern, US health officials said Wednesday.

Moreover, the misperception that marijuana is harmless continues to grow among teens, according to a report released by the White House Office of National Drug Control Policy. However, the report included some positive news, too.

"There are significant reductions in use for many drugs including illegal ones," said Dr Nora Volkow, director of the US National Institute on Drug Abuse, which funded the survey. "Unfortunately, on the bad side, we are sustaining very high levels of marijuana use. At the same time the perception of the harm of marijuana use is at the lowest it's ever been - this is concerning."

How the study was done

It is this perception that is driving the increasing use of marijuana, Volkow said. "This is despite the fact that using marijuana during adolescence is harmful to the human brain," she said.

In 2012, 6.5% of high school seniors said they smoked marijuana every day - that's up from 5.1% in 2007, according to the report.  And almost 23% of these students said they had smoked marijuana in the month before the survey was done, and 36 percent admitted to smoking marijuana in the past year.

Among 10th graders, 3.5% said they smoked marijuana daily and 17% said they used the drug in the past month, while 28% used it in the past year, according to the survey.

Marijuana use goes up after 8th grade, the researchers found. Only 1.1% of 8th graders said they used it daily; 6.5% used it the past month and more than 11% used the drug in the past year, the investigators reported.

In addition, only about 42% of 8th graders said occasional marijuana use was harmful, while nearly 67% said regular use was harmful. These are the lowest rates since the survey began tracking this perception in 1991.

Marijuana perceived as harmless

Moreover, as teens get older and marijuana use increases, the perception of the drug's harmfulness declines. Among 12th graders, only about 21% think occasional use is harmful and only 44% think regular use is harmful, the report states.

Volkow blamed the perception of marijuana as harmless on media attention to the drug and to its legalisation in several states. Removing the legal barrier means people who would not have used the drug because it was against the law now will, she pointed out.

The survey was conducted by researchers at the University of Michigan. In all, more than 45 000 students from almost 400 public and private schools participated in this year's survey.

A more encouraging finding was that use of other drugs among teens had a steady modest decline. For example, in the past year, except for marijuana, drug use among teens was the lowest for all grades. For 8th graders it was 5.5%, while it was 10.8% for 10th graders and 17% for 12th graders.

In the past year, use of Ecstasy among 12th graders dropped to 3.8%, down from 5.3% a year ago, the researchers noted.

For the first year, the survey included the use of drugs known as "bath salts." These drugs contain an amphetamine-like stimulant and are often sold in drug paraphernalia stores.

The use of these drugs was relatively low, the report noted. Among 12th graders, for example, only 1.3% said they used them in the past month.

As for the use of the hallucinogenic herb Salvia, its use dropped among 10th and 12th graders. Last year 5.9% of 12th graders said they used this drug. This year that decreased to 4.4%.

Other highlights of the report include:

  • Use of synthetic marijuana, known as K2 or Spice, was stable in 2012 at just over 11% of 12th graders.
  • Use of inhalants continued a downward trend dropping to 6.2% for 8th graders from 8.3% in 2007.
  • Use of prescription narcotic painkillers like Vicodin declined.
  • Use of the stimulant Adderall (used to treat attention-deficit/hyperactivity disorder) increased among high school seniors as the perception of its harm decreased.
  • Use of cold medicines containing dextromethorphan remains steady at about 5.6% among high school seniors.
  • Alcohol use also declined to 29% of 8th graders from 33% a year ago; among 10th graders its use declined from 72% in 1997 to 54%.
  • Binge drinking rates declined to 5.1% from 6.4% last year among 8th graders.
  • Cigarette smoking reached its lowest level among all teens.
  • Use of small cigars and hookah water pipes rose to nearly 20% of high school seniors.

Read more:

Parents key to preventing alcohol, marijuana use by kids

10 facts on drug mules

Why do teens take drugs?

(Copyright © 2012 HealthDay. All rights reserved.) 

 

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