Daily pot smoking on US college campuses at 35-year high: study

College Students Create Pot Delivery App


The number of U.S. college students smoking marijuana every day or nearly every day is greater than it has been in 35 years, according to a study released on Tuesday.

Nearly 6 percent of college students reported using pot daily or near-daily in 2014, up from 3.5 percent in 2007 but less than the 7.2 percent recorded in 1980, the University of Michigan's Monitoring the Future study found.

Less frequent pot smoking was also on the rise, according to the study, although not as sharply.

"It's clear that for the past seven or eight years there has been an increase in marijuana use among the nation's college students," said Lloyd Johnston, the study's principal author. "And this largely parallels an increase we have been seeing among high school seniors."

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Daily pot smoking on US college campuses at 35-year high: study
Lakewood, CO - MARCH, 4: Sales associate, Crystal Guess handles a jar of cannabis inside a Good Meds medical cannabis center in Lakewood, Colorado, U.S., on Monday, March 4, 2013. This is at a Good Meds medical cannabis center in Lakewood, and is one of the facilities that Kristi Kelly, Co-Founder of Good Meds Network, operates. (Photo by Matthew Staver/For The Washington Post via Getty Images)
MEAUX, FRANCE - AUGUST 25: A field of legal cannabis plants selected for their low content of THC grows on August 25, 2014 near Meaux, France. Cannabis is the source of hemp, which is used in a variety of applications including insulation, textiles, rope and paper. France is the second largest producer of industrial hemp in the world after China. (Photo by Sean Gallup/Getty Images)
This photo taken on July 15, 2014 shows a cannabis plant growing in a garden in Cologne, Germany. A German court ruled for the first time on July 22 that seriously ill patients may grow their own marijuana for medical purposes in certain cases. AFP PHOTO / DPA / OLIVER BERG /GRMANY OUT (Photo credit should read OLIVER BERG/AFP/Getty Images)
DENVER, CO - DECEMBER 30: A marijuana plant grows under a black light at 3D Cannabis Center in Denver, December 30 2013. Starting January 1st Colorado will be the first U.S. state to allow recreational marijuana. (Photo by RJ Sangosti/The Denver Post via Getty Images)
Model ChaCha VaVoom shows her style at the HempCon medical marijuana show, May 24, 2013 at the Los Angeles Convention Center. Thousands of marijuana enthusiasts gathered for the three-day event for exhibits of medical marijuana dispensaries, collectives, evaluation services, legal services and equipment and accessories. Under California state law, people suffering from chronic diseases have the right to grow, buy and use marijuana for medical purposes when recommended by a doctor. In 2003 the Medical Marijuana Protection Act, established an identification card system for medical marijuana patients. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
Attendees look at marijuana paraphenelia displays at the HempCon medical marijuana show, May 24, 2013 at the Los Angeles Convention Center. Thousands of marijuana enthusiasts gathered for the three-day event for exhibits of medical marijuana dispensaries, collectives, evaluation services, legal services and equipment and accessories. Under California state law, people suffering from chronic diseases have the right to grow, buy and use marijuana for medical purposes when recommended by a doctor. In 2003 the Medical Marijuana Protection Act, established an identification card system for medical marijuana patients. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
TO GO WITH AFP STORY by Desiree Martin A picture taken on April 12, 2013 shows plants of marijuana at the plantation of the Sibaratas Med Can association in Mogan on the southwest coast of the island of Gran Canaria. The plants grow from cuttings for approximately two months and then blossom before being harvested, dried, stored in jars for a month and later processed to be consumed on site. Spanish law prohibits the possession of soft drugs like cannabis in public and its growth to be sold for profit is illegal. But the law does tolerate growing cannabis for personal use and its consumption in private. Dozens of private marijuana smoking clubs operate across Spain that take advantage of this legal loophole that serve cannabis users who do not want to get their drugs from the streets. AFP PHOTO / DESIREE MARTIN (Photo credit should read DESIREE MARTIN/AFP/Getty Images)
Marijuana plants grow at the MedMar Healing Center, a medical-marijuana dispensary, in San Jose, California, U.S., on Thursday, Feb. 7, 2013. San Jose is the medical-marijuana capital of Silicon Valley with 106 clinics, about twice as many per square mile as Los Angeles. Photographer: David Paul Morris/Bloomberg via Getty Images
WASHINGTON, DC - NOV 04: Adam Eidinger, co-owner of Capitol Hemp is a leader in the push to fully legalize the possession and use (of up to two ounces) of marijuana and the possession and cultivation of up to three marijuana plants. He was at the after-party for the Yes on 71 event at the Meridian Pint bar as early returns were in favor of the proposition. (Photo by Michael S. Williamson/The Washington Post via Getty Images)
WASHINGTON, DC - NOV 04: Lots of initiative 71 supporters were happy as early returns showed the pro-pot law leading early in the evening. The after-party for the Yes on 71 event was held at the Meridian Pint bar. (Photo by Michael S. Williamson/The Washington Post via Getty Images)
WASHINGTON, DC - NOV 04: (L) Adam Eidinger, co-owner of Capitol Hemp is a leader in the push to fully legalize the possession and use (of up to two ounces) of marijuana and the possession and cultivation of up to three marijuana plants. He was at the polling place at Burke E.S. in Washington, D.C. lobbying voters as they arrived to vote. At right is fellow hemp supporter Zack Pesavendo. (Photo by Michael S. Williamson/The Washington Post via Getty Images)
AURORA, CO - OCTOBER 13: Ray Saccomano, from Aurora, gives one strain of marijuana the smell test. Saccomano says he is glad to have a store close to where he lives. Euflora, the first retail marijuana store in Aurora, opens on Monday, Oct. 13, 2014 at 6260 S. Gun Club Road. The store had no lines of people waiting outside prior to opening, but saw a small, steady crowd as the doors opened. (Kathryn Scott Osler/The Denver Post via Getty Images)
Marijuana (cannabis) is arranged for a photograph inside the Evergreen Apothecary in Denver, Colorado, U.S., on Thursday, Jan. 9, 2014. Colorado has just legalized the commercial production, sale, and recreational use of marijuana, while Washington State will begin its own pot liberalization initiative at the end of February. On Jan. 8, New York Governor Andrew Cuomo said his state would join 20 others and the District of Columbia in allowing the drug for medical purposes. Photographer: Matthew Staver/Bloomberg via Getty Images
BETHPAGE, NY - AUGUST 30: A closeup view of marijuana in a grinder as photographed on August 30, 2014 in Bethpage, New York. (Photo by Bruce Bennett/Getty Images)
BERLIN, GERMANY - AUGUST 09: A participant smokes a marijuana joint while marching in the annual Hemp Parade (Hanfparade) on August 9, 2014 in Berlin, Germany. Supporters of cannabis legalization are hoping legalized sale in parts of the USA will increase the likelihood of legalization in Germany. The city of Berlin is considering allowing the sale of cannabis in one city district. (Photo by Sean Gallup/Getty Images)
An employee pulls marijuana out of a large canister for a customer at the LoDo Wellness Center in downtown Denver, Colorado, U.S., on Thursday, Jan. 9, 2014. Colorado has just legalized the commercial production, sale, and recreational use of marijuana, while Washington State will begin its own pot liberalization initiative at the end of February. On Jan. 8, New York Governor Andrew Cuomo said his state would join 20 others and the District of Columbia in allowing the drug for medical purposes. Photographer: Matthew Staver/Bloomberg via Getty Images
Marijuana (cannabis) is arranged for a photograph inside the Evergreen Apothecary in Denver, Colorado, U.S., on Thursday, Jan. 9, 2014. Colorado has just legalized the commercial production, sale, and recreational use of marijuana, while Washington State will begin its own pot liberalization initiative at the end of February. On Jan. 8, New York Governor Andrew Cuomo said his state would join 20 others and the District of Columbia in allowing the drug for medical purposes. Photographer: Matthew Staver/Bloomberg via Getty Images
CALISTOGA, CA. FEB. 4: Gordon Brownell is a lawyer, and Republican, who ran for first campaign for legalization of marijuana in California in 1972. Some pot and a pipe, the package is from one of the first medical marijuana stores in California
Marijuana (cannabis) is arranged for a photograph inside the Evergreen Apothecary in Denver, Colorado, U.S., on Thursday, Jan. 9, 2014. Colorado has just legalized the commercial production, sale, and recreational use of marijuana, while Washington State will begin its own pot liberalization initiative at the end of February. On Jan. 8, New York Governor Andrew Cuomo said his state would join 20 others and the District of Columbia in allowing the drug for medical purposes. Photographer: Matthew Staver/Bloomberg via Getty Images
Marijuana plant clones stand for sale in The Green Solution dispensary in Denver, Colorado, U.S., on Thursday, Jan. 9, 2014. Colorado has just legalized the commercial production, sale, and recreational use of marijuana, while Washington State will begin its own pot liberalization initiative at the end of February. On Jan. 8, New York Governor Andrew Cuomo said his state would join 20 others and the District of Columbia in allowing the drug for medical purposes. Photographer: Matthew Staver/Bloomberg via Getty Images
A man holds a giant joint during a march for the legalization of cannabis in Santiago, on May 18, 2013, as part of the 2013 Global Marijuana March which is being held in hundreds of cities worldwide AFP PHOTO / Martin BERNETTI (Photo credit should read MARTIN BERNETTI/AFP/Getty Images)
WASHINGTON, DC - OCT10: Medical marijuana is dispensed at the Takoma Wellness Center, October 10, 2014, in Takoma Park, DC. Marijuana legalization in the district is medicinal at this point but activists are looking for a broader relaxation of the law. (Photo by Evelyn Hockstein/For The Washington Post via Getty Images)
A 'legalize' poster for a referendum about legalizing marijuana is placed with mayoral posters in Washington, DC on October 31, 2014. Ballot Initiative 71 would legalize the cultivation and possession of limited amounts of marijuana in the District of Columbia. AFP PHOTO/YURI GRIPAS (Photo credit should read YURI GRIPAS/AFP/Getty Images)
BERLIN, GERMANY - AUGUST 09: A sticker calling for the legalization of marijuana lies on the street at the annual Hemp Parade (Hanfparade) on August 9, 2014 in Berlin, Germany. Supporters of cannabis legalization are hoping legalized sale in parts of the USA will increase the likelihood of legalization in Germany. The city of Berlin is considering allowing the sale of cannabis in one city district. (Photo by Sean Gallup/Getty Images)
BERLIN, GERMANY - AUGUST 09: Participants, including two with a marijuana leaf emblem on their bellies, dance at the annual Hemp Parade (Hanfparade) on August 9, 2014 in Berlin, Germany. Supporters of cannabis legalization are hoping legalized sale in parts of the USA will increase the likelihood of legalization in Germany. The city of Berlin is considering allowing the sale of cannabis in one city district. (Photo by Sean Gallup/Getty Images)
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Loosened marijuana policies in states across the country have likely contributed to a rise in use by teens and young adults, who increasingly perceive the drug as harmless, the study said.

In 2014, 35 percent of 19-to-22-year-old high school graduates said they thought regular marijuana use was dangerous compared to 55 percent in 2006, the study said.

Nationwide, attitudes about marijuana have notably changed recently, with Colorado and Washington state voting to legalize recreational use in 2012 and Oregon, Alaska and the District of Columbia following suit.

The percentage of college students using any illicit drug also rose to 41 percent in 2014, compared to 34 percent in 2006, an increase driven mostly by the uptick in marijuana use, the study said.

However, the use of many illicit drugs by college students has dropped off, including synthetic marijuana which decreased to 0.9 percent in 2014 from 7.4 percent in 2011, when it was first included in the survey. Drugs like heroin and LSD have remained low in recent years.

Amphetamines, often used to aid studying or test taking, and ecstasy, usually considered a party drug, continue to be popular illicit drugs used by college students, but their use has begun to level out or decline.

Cocaine may be making a comeback on college campuses, with 4.4 percent in 2014 reporting to have used the stimulant in the past 12 months compared to 2.7 percent in 2013.

Monitoring the Future, used by federal health officials to track data on youth substance abuse, surveyed between 1,000 and 1,500 full-time college students for the study, which has been conducted annually since 1980.

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