The consequences and risks associated with marijuana use may seem to be lower than for heroin or cocaine, but due to the high rates of use of the drug worldwide the health impacts are still substantial.
Once an Ecstasy user takes the drug, it takes only about 15 minutes for the drug to enter the bloodstream and reach the brain.
LSD use reached its highest peak during the 1960s and '70s, where it was typically used by those in the "hippie" youth culture during that time.
Use of barbiturates decreases REM (rapid eye movement) sleep, during which dreaming takes place, and therefore withdrawal often results in sleep disruptions such as nightmares, insomnia, or vivid dreaming.