"Marijuana withdrawal symptoms among heavy users include sleep disorders and anxiety."
"If you are not satisfied with 'regular' life, you are very likely to become addicted. ... It's imperceptible. First you wouldn't believe you were addicted."
The 7 questions you have to ask to determine if you're addicted to marijuana.
Signs that you are addicted to marijuana
"When you're high, you can mess up in school. It can lead to risky sexual behaviors. It can lead to dangerous driving."