Marijuana or cannabis is a soft drug which has been used by humans since thousands of years.
Marijuana is produced from a plant called cannabis sativa or cannabis indicia.
However marijuana smoke contains over 400 different chemical including 66 other related cannabinoids.
These receptors are located throughout the central nervous system and their action activates the mediocorticolimbic pathways in the brain which is the drug reward centre.
The major effects of cannabis include euphoria, disinhibition, altered sensory perceptions, increased heart rate, and dilatation of pupils, red eyes, dry mouth, and anxiety.
Medical Marijuana Medical marijuana is legal in several states and can provide benefits for people with a wide variety of medical issues.