Marijuana has the chemical tetrahydrocannabinol, known as THC, and 400 other chemicals some of which cause cancer.
Pot affects judgment, motor coordination and short-term memory, causes increased heart rate anxiety and paranoia.
Long term marijuana smokers experience brain affects similar to those caused by prolonged use of cocaine and heroin.
Marijuana users have shortened attention spans, low energy and ambition, poor judgment, are easily distracted and inability to communicate and relate to others, younger regular users have double the risk of depression later in life.
Commons street names: blunt, dope, ganja, grass, herb, joints, mary jane, pot, reefer, skunk, weed