Marijuana has been illegal for years because of the thought that it was a drug similar to cocaine, or heroin. Drugs such as cocaine and heroin affect the neurotransmitter dopamine. Dopamine is the neurotransmitter associated with extremely pleasurable sensations. If a drug interferes with its production and causes too much to be produced the result is extremely pleasurable and can lead to severe abuse and addiction. It has recently been proven that marijuana is not …showed first 75 words of 463 total…

…showed last 75 words of 463 total…effects on the brain. Marijuana can be very dangerous if used in excess. Though it does not cause the user to become physically dependent it can cause them to become psychologically dependent. The brain is quite possibly the most important organ in the body and the use of marijuana causes the brain to function in ways that can be dangerous to the user or to others and for this marijuana is illegal, and justly so.