• Marijuana - A mixture of the crushed
leaves and flowers of the cannabis
• THC, or tetrahydrocannabinol - the main
active chemical in marijuana.
• Hashish, or hash - the concentrated,
resinous extract of cannabis that is 2 to
10 times as concentrated as marijuana.
How is marijuana used?
• Smoked in a pipe or cigarette which is
known as a joint.
• Smoked in a blunt, which is a hollowed
out cigar filled with marijuana.
• Put in food.
Effects of marijuana
• Nervous system - anxiety, panic, and attacks
• Respiratory system - irritates the air passages
and throat. Causes bronchitis, emphysema,
and lung cancer.
• Mouth - Smoke that enters the mouth
develops into cancer of the mouth and larynx.
Effects of marijuana, (con’t)
• Cardiovascular system - increase in heart
rate and blood pressure.
• Immune system - marijuana compromises
• Reproductive system - disrupts the menstrual
cycle, lowers sperm count, and causes the
formation of irregular sperm cells.
Immediate Effects of Marijuana
• Increased appetite
• Bloodshot eyes
• Dry mouth and throat
• Loss of short-term memory
Risks of Marijuana Use
• Reduced immune system
• Impaired memory and ability to learn
• Hallucinations, paranoia, and psychosis
• A single marijuana cigarette contains as
much tar and other irritants as 16 filtered
• Common names for marijuana include pot,
grass, weed, reefer, joint, roach, Mary Jane,
• THC is stored in the fatty areas of the body:
the brain, lungs, and reproductive organs.
• Marijuana can be detected for 28 days in the
Miscellaneous Info. (con’t)
• In 1985 the FDA approved the use of
synthetic THC for treating the nausea of
cancer chemotherapy patients.
• In 1960 an average marijuana cigarette
contained 0.2% THC. Today the average is
between 5% and 14%.
• In females, marijuana raises testosterone
levels and can cause increased facial and
body hair, acne, and infertility.