There’s a lot of conflicting data surrounding marijuana. Teens are surrounded by contradictory messages about marijuana every day, but few really understand the facts or how it actually impacts their lives. Marijuana is the dried leaves and flowers of the Cannabis sativa or Cannabis indica plant. Stronger forms of the drug include high potency strains – known as sinsemilla, hashish (hash for short), and extracts including hash oil, shatter, wax, and budder. When marijuana is smoked or vaporized, THC quickly passes from the lungs into the bloodstream, which carries it to organs throughout the body, including the brain. This can affect decision making, concentration, and memory for days after use, especially in people who use marijuana regularly. Other effects include changes in perceptions and mood, lack of coordination, difficulty with thinking and problem solving, and disrupted learning and memory.