Ecstasy causes a release of large amounts of serotonin, while also inhibiting or blocking its synthesis, which leads to a considerable depletion of serotonin.
Among male high school aged youth in the U.S., African-Americans are more likely to use marijuana compared to those of other races.
The most prevalent symptoms of a cocaine overdose are reported to be rapid heartbeat, hyperventilation, and the user experiencing a feeling of impending death.
Early repeated use of marijuana during adolescence may cause chronic marijuana use later in life.
Crack is five to six times more potent than powder cocaine which is typically purchased on the street.