WHAT IS MARIJUANA?
Marijuana is a mind-altering (psychoactive) drug, produced by the Cannabis sativa plant.
Marijuana has over 480 constituents. THC (delta9-tetrahydrocannabinol) is believed to be the main
ingredient that produces the psychoactive effect.
WHAT IS ITS ORIGIN?
Marijuana is grown in the United States, Canada, Mexico, South America, Caribbean, Africa, and Asia.
It can be cultivated in both outdoor and indoor settings.
What are common street names?
Common street names include:
• Aunt Mary, BC Bud, Blunts, Boom, Chronic, Dope, Gangster, Ganja, Grass, Hash, Herb,
Hydro, Indo, Joint, Kif, Mary Jane, Mota, Pot, Reefer, Sinsemilla, Skunk, Smoke, Weed, and
Yerba
What does it look like?
Marijuana is a dry, shredded green/brown mix of flowers, stems, seeds, and leaves from the
Cannabis sativa plant. The mixture typically is green, brown, or gray in color and may resemble
tobacco.
How is it abused?
Marijuana is usually smoked as a cigarette (called a joint) or in a pipe or bong. It is also smoked in
blunts, which are cigars that have been emptied of tobacco and refilled with marijuana, sometimes in
combination with another drug. Marijuana can also be mixed in foods (edibles) or brewed as a tea.
What is its effect on the mind?
When marijuana is smoked, the active ingredient THC passes from the lungs and into the
bloodstream, which carries the chemical to the organs throughout the body, including the brain.
In the brain, THC connects to specific sites called cannabinoid receptors on nerve cells and influences
the activity of those cells.
Many of these receptors are found in the parts of the brain that influence:
• Pleasure, memory, thought, concentration, sensory and time perception, and coordinated
movement
The short-term effects of marijuana include:
• Problems with memory and learning, distorted perception, difficulty in thinking and problem solving, and loss of coordination The effect of marijuana on perception and coordination are responsible for serious impairments in learning, associative processes, and psychomotor behavior (driving abilities).
Long term, regular use can lead to physical dependence and withdrawal following discontinuation, as well as psychological addiction or dependence.
Clinical studies show that the physiological, psychological, and behavioral effects of marijuana
vary among individuals and present a list of common responses to cannabinoids, as described in the
scientific literature:
• Dizziness, nausea, tachycardia, facial flushing, dry mouth, and tremor initially
• Merriment, happiness, and even exhilaration at high doses
• Disinhibition, relaxation, increased sociability, and talkativeness
• Enhanced sensory perception, giving rise to increased appreciation of music, art, and touch
• Heightened imagination leading to a subjective sense of increased creativity
• Time distortions
• Illusions, delusions, and hallucinations are rare except at high doses
• Impaired judgment, reduced coordination, and ataxia, which can impede driving ability or lead
to an increase in risk-taking behavior
• Emotional lability, incongruity of affect, dysphoria, disorganized thinking, inability to converse logically, agitation, paranoia, confusion, restlessness, anxiety, drowsiness, and panic attacks may occur, especially in inexperienced users or in those who have taken a large dose
• Increased appetite and short-term memory impairment are common
What is its effect on the body?
Short-term physical effects from marijuana use may include:
• Sedation, bloodshot eyes, increased heart rate, coughing from lung irritation, increased appetite, and increased blood pressure (although prolonged use may cause a decrease in blood pressure).
Marijuana smokers experience serious health problems such as bronchitis, emphysema, and bronchial asthma. Extended use may cause suppression of the immune system. Withdrawal from chronic use of high doses of marijuana causes physical signs including headache, shakiness, sweating, and stomach pains and nausea.
Withdrawal symptoms also include behavioral signs such as:
• Restlessness, irritability, sleep difficulties, and decreased appetite