The fact that the body stores THC may be a factor in developing tolerance. Physical dependence is manifested when an interruption of drug use produces physical withdrawal symptoms. It is believed that marijuana is not physically addictive, except in extremely high doses that are atypical of the majority of users. Moreover, the lack of motivation that also is experienced by regular users may make it even more difficult to discontinue using marijuana. Marijuana is safe because it is a plant.
Many plants are toxic and unsafe for human use, including marijuana.
Marijuana users do not go on to use other drugs. Marijuana wears off in a few hours. Because marijuana is stored in the body, its effects may be felt for days or weeks following ingestion. Marijuana is safer than alcohol. Marijuana expands the mind.