Alcohol in Teenagers Excessive drinking of alcoholic beverages is bad for everyone's health in many ways, but it is especially damaging to a teenagers developing brain. ... According to the Health Effects of Marijuana Use (2014), marijuana is made from dried leaves, flowers, stems, and seeds which come from the plant Cannabis sativa which contains a mind-altering chemical called delta-9-tetrahydrocannabinal (THC). ...
Definition The use of illicit or illegal drugs or the abuse of prescription or over-the-counter drugs for purposes other than those for which they are indicated or in a manner or in quantities other than directed. History of Drug Abuse Humans have used drugs of one sort or another for thousands ...