- Most users roll loose marijuana into a
cigarette (called a "joint").
of smoking marijuana are felt within minutes, reach their peak in 10 to 30 minutes,
and may linger for two or three hours.
is the most often used illegal drug in this country.
decreases the body's ability to fight diseases.
traces (metabolites) of THC can be detected by standard urine testing methods
several days after a smoking session. However, in heavy chronic users, traces
can sometimes be detected for weeks after they have stopped using marijuana.
1995, 165,000 people entering drug treatment programs reported marijuana as their
primary drug of addiction, showing they need help to stop using the drug.
marijuana causes some changes in the brain that are like those caused by cocaine,
heroin, and alcohol.
- People who smoke
marijuana often develop the same kinds of breathing problems that cigarette smokers
have: coughing and wheezing. They tend to have more chest colds than nonusers.
They are also at greater risk of getting lung infections like pneumonia.
- In one study conducted in Memphis,
TN, researchers found that, of 150 reckless drivers who were tested for drugs
at the arrest scene, 33 percent tested positive for marijuana, and 12 percent
tested positive for both marijuana and cocaine.
or THC, one of nearly 400 chemicals in a hemp plant, accounts for most of marijuana's
psychoactive, or mind-altering, effects. The strength of the drug is determined
by the amount of THC it contains.
suppresses the neurons in the information-processing system of the hippocampus,
the part of the brain that is crucial for learning, memory, and the integration
of sensory experiences with emotions and motivation.
marijuana decreases blood flow to the brain.
is classified as a "psychotropic" or "psychoactive" drug and
is highly addictive for some individuals.
has a strong and distinct odor that is not easy to wash off and that can remain
on the breath despite repeated brushing.
can get high from second hand marijuana smoke.
it is part of the illegal drug trade and is the most widely used illegal substance
in North America, marijuana is a major contributor (directly and indirectly) to
petty crime and drug related violence.
scientific studies have found that babies born to marijuana users were shorter,
weighed less, and had smaller head sizes than those born to mothers who did not
use the drug.
- Studies have shown that
marijuana lowers testosterone levels in men.
use can also lower sperm counts possibly resulting in difficulty in having children.
- Females who use marijuana, over time,
increase their levels of testosterone which can result in increased facial hair
and acne, and may adversely affect reproductive functioning in women.
is the most frequently used illegal drug in the United States. Nearly 69 million
Americans over the age of 12 have tried marijuana at least once.
report that marijuana cigarettes release five times as much carbon monoxide into
the bloodstream and three times as much tar into the lungs of smokers as tobacco
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- Drug Facts
- Marijuana use can also lower sperm counts possibly resulting in difficulty in having children.
- In blind trials, users who were given both drugs orally were unable to distinguish between the effects heroin and methadone.
- Methadone is a synthetic drug. It was first invented in Germany during the Second World War by scientists who, having discovered pethidine some years earlier, were developing other similar compounds.
- In 1994, cocaine-related episodes comprised 28% of all emergency room drug-related episodes.