How Much Do You Know About Marijuana?

Knowing about marijuana can help you recognize its use in others, so you can encourage them to seek treatment. Marijuana is a street drug made from the flowers, stems, seeds, and leaves of the hemp plant. It is usually smoked as a cigarette, in a pipe, or in a cigar casing in which the inner tobacco has been replaced with marijuana. Marijuana also can be consumed by mixing with foods, brewing into a tea or "vaping" in an e-cigarette device. The main active ingredient is a chemical called THC (tetrahydrocannabinol). Some man-made chemicals resemble THC (synthetic cannabinoids), but are much stronger than THC. They are sometimes called "spice." To learn more about marijuana, take this quiz, based on information from the National Institute on Drug Abuse (NIDA).

1. Marijuana is the most commonly used illegal drug in the United States.
2. Marijuana smoke contains cancer-causing substances and hundreds of other chemicals.
3. Marijuana affects a user's attention and short-term memory, making it hard to concentrate and solve problems. It also harms the ability to make decisions, making it dangerous to drive a car.
4. Marijuana isn't as strong today as it was in the 1970s.
5. Signs of marijuana intoxication include dizziness, difficulty walking, giggling for no reason, and red, bloodshot eyes.
6. Ganja is a street term for marijuana.
7. Studies of high school students show that few young people use other drugs without first trying marijuana, alcohol, or tobacco.