Common-Myths-and-Truths-about-MarijuanaCommon Myths and Truths about Marijuana
Myth #1: Marijuana use has been scientifically proven to be really harmful.
Fact #1 In 1972, after reviewing the scientific evidence, the National
Commission on Marijuana and Drug Abuse concluded that while marijuana
is not entirely safe, its dangers had been grossly overstated.
Fact #2 In 1995, based on thirty years of scientific research,
editors of the British journal Lancet (the British equivalent of New
England Journal of Medicine) concluded that "the smoking of cannabis,
even long term, is not harmful to health."
Myth #2: Marijuana has no medicinal value.
Fact #1 Marijuana has been shown to be effective in reducing nausea
induced by cancer chemotherapy, stimulating appetite in AIDS patients,
and reducing intraocular pressure in people with glaucoma.
Myth #3: Marijuana use by kids is OK.
Fact #1 Marijuana use by kids, like alcohol and tobacco, is not OK.
Its use is illegal, and the effect of marijuana on kids in their
developmental stage has not been studied. Common sense tells us that
marijuana use by kids is not a good idea.
Fact #2 Marijuana use by kids, coupled with other drug use and
behavioral problems, can be a sign that a child needs professional
Fact #3 90% of kids who try marijuana don't go on to use other drugs, and do not continue to use marijuana.
Myth #4: Marijuana is highly addictive.
Fact #1 Most people who smoke marijuana smoke it only occasionally.
A small minority of Americans --less than one percent - smoke marijuana
on a daily or near-daily basis. An even smaller minority develops
dependence on marijuana. Marijuana is not physically addictive.
Myth #5: Marijuana leads to harder drugs (the "gateway theory")
Fact #1 Over 70 million people have tried marijuana. Most marijuana
users never use any other illegal drug. Indeed, for the vast majority
of people, marijuana is the last drug they try, not a "gateway" to
other drugs. If it were a gateway drug and if it were so addictive, we
would have more than 3 million heroin and cocaine addicts in the U.S.
Fact #2 Marijuana is the most popular illegal drug in the United
States today. Therefore, people who have used less popular drugs such
as heroin, cocaine and LSD are likely to have also tried marijuana.
Myth #6: Marijuana impairs memory and cognition.
Fact #1 Marijuana produces immediate, temporary changes in
thoughts, perceptions, and information processing. The cognitive
process most clearly affected by marijuana is short-term memory. In
laboratory studies, subjects under the influence of marijuana have no
trouble remembering things they learned previously. However, they
display diminished capacity to learn and recall new information. This
diminishment only lasts for the duration of intoxication.
Myth #7: Marijuana causes crime. Under the influence of marijuana, people become irrational, aggressive, and violent.
Fact #1 Every serious scholar and government commission examining
the relationship between marijuana use and crime has reached the same
conclusion: Marijuana does not cause crime. The vast majority of
marijuana users do not commit crimes. Almost all human and animal
studies show that marijuana decreases aggression.
Myth #8: Marijuana can cause infertility and retards sexual development in adolescents.
Fact #1 There is NO evidence that marijuana causes infertility in
men or women. Most studies of humans have found that marijuana has no
impact on sex hormones. In those studies showing an impact, it is
modest, temporary, and of no apparent consequence for reproduction.
Fact #2 There is NO scientific evidence that marijuana delays
adolescent sexual development, has a feminizing effect on males, or a
masculinizing effect on females.
Myth #9: Marijuana is more damaging to the lungs than tobacco.
Fact #1 Moderate smoking of marijuana appears to pose minimal danger to the lungs.
Myth #10: Marijuana use is a major cause of highway accidents.
Fact #1 People should not drive while under the influence of
marijuana. At some doses, marijuana affects perceptions and psychomotor
performance. However, alcohol and other drugs contribute greater rates
of motor vehicle deaths than marijuana does, however alcohol remains
Myth #11: Marijuana-related hospital emergencies are increasing, particularly among youth.
Fact #1 There is no lethal dose of marijuana. You cannot die from "binge smoking" like you can from binge drinking.
Fact #2 The number of people in hospital emergency rooms who say
they have used marijuana has increased. This does not mean that people
come to the emergency room because of marijuana. Many more teenagers
use marijuana than hard drugs like heroin and cocaine. As a result,
when teenagers visit hospital emergency rooms, they report marijuana
much more frequently than they report heroin or cocaine.
Fact #3 In 1994, fewer than 2 percent of drug-related emergency room visits involved the use of marijuana alone.
Myth #12: Marijuana is more potent today than in the past.
Fact #1 Marijuana is the same drug it has always been.
Fact #2 Potency data from the early 1980s do not show an increase in the average THC content of marijuana.
Myth #13: Marijuana use can be prevented through anti-drug education and prohibition.
Fact #1 There is no evidence that spending billions of dollars over
the past 20 years for anti-drug messages has diminished young people's
interest in trying marijuana.
Fact #2 For most age groups, rates of marijuana use in the
Netherlands are similar to those in the United States. However, for
young adolescents, rates of marijuana use are LOWER in the Netherlands
than in the United States.