Marijuana: Right behind caffeine, alcohol, and tobacco, marijuana is the most commonly used psychoactive (mood-altering) drug in the United States. It is estimated that 70 million Americans have tried marijuana at least once and 11.1 million Americans are current users. The average age people start smoking marijuana is under 14 years. Marijuana's scientific name is Cannabis Sativa (the hemp plant), and it grows wild in temperate and tropical climates. Most wild marijuana is considered inferior to cultivated marijuana because it contains a low concentration of Delta -9-tetrahydrocannabinol (THC).
Narconon warns that cultivated marijuana contains ten times the THC of wild marijuana. THC is the primary mind-altering agent in marijuana and is highly concentrated in the flowering tops and upper leaves of the female plant. Twenty-five percent of the marijuana consumed in the United states is domestically grown. Major producers of marijuana include Alabama, Hawaii, Kentucky, T...