Marijuana (Cannabis sativa)
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Marijuana, hemp, and cannabis are common names for plants of the genus Cannabis . The term hemp is often used for cannabis strains grown specifically for production of paper, rope, and cloth. Other cannabis strains are used to make recreational and medicinal drugs. The major difference between the main types of cannabis plants is the amount of the psychoactive compound tetrahydrocannabinol (THC) they contain.
Cannabis has been used medicinally for approximately 5,000 years. The most widely used components of the herb in traditional medicine are the seed and seed oil. Cannabis sativa is widely used recreationally (inhaled or taken by mouth) to achieve increased feelings of well-being.
Cannabis has been studied for the treatment of a number of conditions, including eczema, epilepsy, chronic pain, insomnia, and symptoms of multiple sclerosis. The most significant benefits have been found in the treatment of chronic pain and symptoms of multiple sclerosis.
The two most studied cannabinoid compounds of Cannabis sativa are the psychoactive tetrahydrocannabinol (THC) and the nonpsychoactive cannabidiol (CBD).