This article gives a brief summary of cannabis res

This article gives a brief summary of cannabis restriction.

The use of Cannabis for medicinal purposes dates back at least 3,000 years. It came into use in Western medicine in the 19th century and was said to relieve pain, inflammation, spasms, and convulsions.

In 1937, the U.S. Treasury began taxing Cannabis under the Marijuana Tax Act at one dollar per ounce (= $16 in 2013 dollars) for medicinal use and one hundred dollars per ounce (= $1600 in 2013 dollats) for recreational use.

The American Medical Association (AMA) opposed this regulation of Cannabis and did not want studies of its potential medicinal benefits to be limited.

In 1942, Cannabis was removed from the U.S. Pharmacopoeia because of continuing concerns about its safety.

In 1951, Congress passed the Boggs Act, which included Cannabis with narcotic drugs for the first time.

Under the Controlled Substances Act of 1970, marijuana was classified as a Schedule I drug. Other Schedule I drugs include heroin, LSD, mescaline, methaqualone, and gamma-hydroxybutyrate (GHB).

Although Cannabis was not believed to have any medicinal use, the U.S. government distributed it to patients on a case-by-case basis under the Compassionate Use Investigational New Drug (IND) program between 1978 and 1992.

In the past 20 years, researchers have studied how cannabinoids act on the brain and other parts of the body. Cannabinoid receptors (molecules that bind cannabinoids) have been discovered in brain cells and nerve cells in other parts of the body.