How long does marijuana stay in the user's body?
How many teens smoke marijuana?
Why do young people use marijuana?
What happens if you smoke marijuana?
What are the short-term effects of marijuana use?
Does marijuana affect school, sports, or other activities?
What are the long-term effects of marijuana use?
Does marijuana lead to the use of other drugs?
How does marijuana affect driving?
Is marijuana sometimes used as a medicine?
If someone is pregnant and smokes it, will marijuana hurt the baby?
What does marijuana do to the brain?
Can people become addicted to marijuana?
What if a person wants to quit using the drug?