Neuroscience

Can medical marijuana effectively treat childhood epilepsy?

Following media reports of children with epilepsies reportedly deriving benefits from medical marijuana (or cannabis-based medicinal products) accessed abroad, the UK government allowed clinicians to prescribe these products. ...

Addiction

Marijuana use at historic high among college-aged adults in 2020

Marijuana use continued to rise among college students over the past five years and remained at historically high levels among same-aged peers who are not in college in 2020, according to survey results from the 2020 ...

Oncology & Cancer

Cancer patients use less marijuana than general public

Last month, three states—Virginia, South Dakota and Connecticut—joined the ranks of more than a dozen others that have legalized marijuana—also known as cannabis—for recreational use. Yet, despite these changing laws ...

Psychology & Psychiatry

Cannabinoid pathway linked to psychiatric disorders

Northwestern Medicine scientists discovered an unexpected connection between a synapse protein that has been implicated in neuropsychiatric disorders and the endocannabinoid pathway, according to a study published in Biological ...

Psychology & Psychiatry

Pot use may change the teenage brain, MRIs show

Smoking pot appears to affect teens' brain development, altering it in ways that could diminish their reasoning, decision-making and memory skills as they age, a new study reports.

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Cannabis (drug)

C. sativa L. subsp. sativa C. sativa L. subsp. indica

Cannabis, also known as marijuana, marihuana, and ganja (from Sanskrit: गांजा gañjā, hemp)a[›], refers to any number of preparations of psychoactive drug from the Cannabis plant. The most common form is the natural herbal form.

The herbal form of the drug consists of mature female flowers and sub-tending leaves of pistillate (female) plants. The resinous form, known as hashish, consists primarily of glandular trichomes collected from the same plant material. The major psychoactive chemical compound in Cannabis is Δ9-tetrahydrocannabinol (delta-9-tetrahydrocannabinol), commonly referred to as THC. At least 66 other cannabinoids are present in Cannabis, such as cannabidiol (CBD) and cannabinol (CBN). Many of these cause some psychoactive interactions.

Marijuana is seen in strains of either pure breeds or intra-specific hybrids of Cannabis, typically of the subspecies indica or sativa. Strains are developed to highlight a specific combination of properties of the plant or to establish marketing differentiation.

The human consumption of Cannabis smoke is found as long ago as the 3rd millennium BC. In modern times, the drug has been used for recreational, religious or spiritual, and medicinal purposes. The United Nations estimates that about four percent of the world's adult population (162 million) use cannabis annually and about 0.6 percent (22.5 million) daily. The possession, use, or sale of psychoactive Cannabis products became illegal in most parts of the world in the early 20th century. Since then, some countries have intensified the enforcement of cannabis prohibition while others have reduced the priority of enforcement.

This text uses material from Wikipedia, licensed under CC BY-SA