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Marijuana plant strains and their primary effects:
Marijuana, or cannabis, belongs to the family Cannabaceae and comprises three primary species: Cannabis indica, Cannabis sativa, and the low‑THC Cannabis ruderalis. Users typically consume crushed leaves and flower buds—either by smoking, vaporizing, or ingesting in food—each strain producing distinct physiological responses. For purely medicinal purposes, many patients prefer the CBD extract to avoid psychoactive effects.
Chinese Emperor Shen Nong first recorded cannabis’s therapeutic properties in 2737 B.C., highlighting its use for rheumatism, gout, malaria, and mental agitation. The plant entered Europe around 500 A.D. and was introduced to the New World by Spanish explorers in 1545. By the 17th and 19th centuries, hemp was a major cash crop in Jamestown and the American South, eventually surpassing cotton in the 1890s. During Prohibition, cannabis clubs—referred to as “tea pads”—provided an alcohol alternative, and law enforcement largely tolerated these venues at the time.
Medical cannabis is now prescribed for a broad spectrum of conditions, including chronic pain, fibromyalgia, epilepsy, Parkinson’s disease, traumatic brain injury, certain cancers, cachexia, glaucoma, HIV/AIDS, muscle spasms, severe nausea, and menopausal symptoms in women. These applications are supported by a growing body of clinical evidence and patient testimonials.
Charlotte Figi, a Colorado resident born in 2006, suffered from Dravet Syndrome—a rare, drug‑resistant epileptic disorder—beginning at three months old. By age 2½, her seizures had escalated to prolonged episodes lasting hours, requiring frequent hospitalization. After her parents introduced a low‑THC CBD oil (containing only 0.3 % THC), Charlotte’s seizure frequency and severity dropped dramatically, allowing her to attend school and live a more typical childhood. The case of Charlotte Figi underscores the transformative potential of CBD‑rich cannabis extracts.
While ongoing research continues to elucidate both short‑ and long‑term outcomes of cannabis use, most studies confirm therapeutic benefits for the conditions mentioned above. Nonetheless, clinicians caution against THC exposure in developing children and adolescents due to its impact on neurodevelopment. A recent University of Texas, Dallas study found that chronic users exhibit reduced orbitofrontal cortex activity; however, compensatory increases in connectivity elsewhere in the brain may mitigate overall functional deficits.
The prohibition of cannabis can be traced back to powerful industrial interests, notably DuPont and Hearst, who sought to eliminate hemp competition for plastic rope and newspapers. Through a concerted public relations campaign—including the propaganda film “Reefer Madness”—cannabis was conflated with hemp and criminalized via the Marijuana Tax Act of 1937. The Controlled Substances Act of 1970 classified it as a Schedule I drug, placing it alongside heroin and LSD. As of November 2017, 29 states and the District of Columbia have legalized medical cannabis, while nine states plus D.C. permit recreational use. Achieving nationwide legalization requires congressional action to remove cannabis from the Schedule I list and to authorize industrial hemp cultivation, which remains federally prohibited.
