The Dangers of Marijuana

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Marijuana, Cannabis Sativa, has been used for centuries for its medicinal and euphorant properties, and its fibers, to make hemp cloth and paper. Medicinally, between 1850 and 1942, it was prescribed in the United States Pharmacopeia as a remedy for a variety of ailments including gout, tetanus, depression, and cramps (Farthing 1992). Today, it is used for reducing intraocular pressure due to glaucoma, as an antiemetic to relieve nausea associated with chemotherapy, and as an appetite stimulant for AIDS patients. Recreationally, it is the most widely used illicit drug, especially among adolescents.

The main psychoactive component of marijuana is (9-tetrahydrocannabinol (THC). Other prominent cannabinoids include cannabidiol, cannabinol, and (9-tetrahydrocannabinic acid. Together, these compounds contribute to various behavioral and cognitive changes, which can slightly differ based on the route of preparation and administration (Farthing 1992). THC is found in the sticky resin of the cannabis plant, with the highest concentration in the flowering tops (buds) of the female plant. Marijuana is a preparation of the leaves, stems, and buds, while hash is a concentration of the resin. Smoking and oral ingestion are the most common ways of administration and can produce slightly distinct effects due to the different filtering methods of the digestive tract and lungs.

The subjective experience of marijuana can include prolongation of the passing of time, altered awareness of self and the environment, and occasional paranoia or increased anxiety. At high enough doses, hallucinations can also be experienced (Farthing 1992). While intoxicated, a large range of acute cognitive effects has been found, including difficulty in motor c...

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