- Marijuana is an abused, illegal drug in the United States.
- Marijuana is a green, brown, or gray mixture of dried, shredded leaves, stems, seeds, and flowers of the hemp plant Cannabis sativa. Cannabis is a term that refers to marijuana and other drugs made from the same plant. Other forms of cannabis include sinsemilla, hashish, and hash oil. All forms of cannabis are mind-altering (psychoactive) drugs.
- The main active chemical in marijuana is delta-9-tetrahydrocannabinol, THC for short.
- Marijuana is usually smoked as a cigarette (called a joint), or in a pipe or bong. Marijuana smoke has a pungent and distinctive, usually sweet-and-sour odor.
- Marijuana has also appeared in blunts, which are cigars that have been emptied of tobacco and refilled with marijuana, sometimes in combination with another drug, such as crack.
- Marijuana can also be mixed into foods or used to brew a tea.
- Problems in daily life or make existing problems worse
- Problems with memory and learning
- Can last for days or weeks after the acute effects of the drug wear off... someone who smokes marijuana every day may be functioning at a suboptimal intellectual level all of the time.
- Distorted perception
- Difficulty in thinking and problem solving
- Loss of coordination
- Increased heart rate
- Increases heart rate by 20 to 100 percent shortly after smoking and can last up to 3 hours.
- Increased risk of heart attack in the first hour after smoking the drug. This may be due to the increased heart rate as well as effects of marijuana on heart rhythms, causing palpitations and arrhythmias. This risk may be greater in aging populations or those with cardiac vulnerabilities.
- Anxiety
- Respiratory illnesses
- Daily cough and phlegm production
- More frequent acute chest illnesses
- A heightened risk of lung infections
- A greater tendency toward obstructed airways
- Cancer of the respiratory tract and lungs - Marijuana has the potential to promote cancer of the lungs and other parts of the respiratory tract because marijuana smoke contains 50 percent to 70 percent more carcinogenic hydrocarbons than does tobacco smoke.
- Depression
- Suicidal ideation
- Schizophrenia
- Addiction
- Irritability
- Sleeplessness
- Decreased appetite
- Anxiety
- Drug craving


















