Carl Olsen is the founder of Iowans for Medical Marijuana.
Therapeutic use of marijuana stretches back centuries, but the popularity of its modern use appears to have begun with the discovery of the THC molecule. Tetrahydrocannabinol (THC) is the principal psychoactive constituent of cannabis and one of at least 113 total cannabinoids identified on the plant. THC was first discovered and isolated by Bulgarian-born chemist Raphael Mechoulam in Israel in 1964.
On May 13, 1986, the Drug Enforcement Administration (DEA) transferred the synthetic form of THC from schedule I to schedule II of the Controlled Substances Act (CSA). On July 1, 1999, the DEA transferred this synthetic form of THC from schedule II to schedule III of the CSA. Federal Register: Vol. 64, No. 127, Friday, July 2, 1999.
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