News tagged with marijuana
Occasional marijuana use doesn't harm lungs, study finds
Smoking marijuana on an occasional basis does not appear to significantly damage the lungs, according to a new study.
Jan 12, 2012 |
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Marijuana smoke not as damaging to lungs as cigarette smoke
Using marijuana carries legal risks, but a new study shows that the consequences of occasionally lighting up do not include long-term loss of lung function, according to a new study by University of Alabama at Birmingham ...
Jan 10, 2012 |
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Marijuana use associated with cyclic vomiting syndrome in young males
Researchers have found clear associations between marijuana use in young males and cyclic vomiting syndrome (CVS), where patients experience episodes of vomiting separated by symptom free intervals.
Jan 09, 2012 |
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Survey: Teen pot use rises, alcohol use declines
(AP) -- More teens are turning to pot and see it as less of a risk at the same time alcohol use among the same age group has dipped to historic lows, according to an annual national survey of drug use released Wednesday.
Dec 14, 2011 |
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Medical marijuana could help patients reduce pain with opiates, study finds
A UCSF study suggests patients with chronic pain may experience greater relief if their doctors add cannabinoids – the main ingredient in cannabis or medical marijuana – to an opiates-only treatment. ...
Dec 06, 2011 |
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US governors seek federal marijuana clearance
A pair of US governors have filed a petition asking the US federal government to allow wider use of medical marijuana by authorizing doctors to prescribe it and pharmacies to provide it.
Dec 01, 2011 |
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Study shows medical marijuana laws reduce traffic deaths
A groundbreaking new study shows that laws legalizing medical marijuana have resulted in a nearly nine percent drop in traffic deaths and a five percent reduction in beer sales.
Nov 29, 2011 |
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Study finds legalizing medical marijuana does not increase use among youth
A Rhode Island Hospital physician/researcher will present findings from a study investigating whether legalizing medical marijuana in Rhode Island will increase its use among youths. Lead author Esther Choo, M.D., M.P.H., ...
Nov 02, 2011 |
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Montel Williams: Israel leads in medical marijuana
(AP) -- Emmy Award-winning television personality and patient activist Montel Williams said Sunday he was impressed with Israel's liberal attitude toward medical marijuana, and he believes the U.S. could ...
Medicine & Health / Medications
Oct 31, 2011 |
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How cannabis causes 'cognitive chaos' in the brain
Cannabis use is associated with disturbances in concentration and memory. New research by neuroscientists at the University of Bristol, published in the Journal of Neuroscience, has found that brain activity becomes uncoor ...
Medicine & Health / Neuroscience
Oct 25, 2011 |
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How hemp got high: Canadian scientists map the cannabis genome
A team of Canadian researchers has sequenced the genome of Cannabis sativa, the plant that produces both industrial hemp and marijuana, and in the process revealed the genetic changes that led to the plant's drug-producing proper ...
Oct 19, 2011 |
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Marijuana use may double the risk of accidents for drivers
Over 10 million people age 12 or older are estimated to have driven under the influence of illicit drugs in the prior year, according to a 2009 National Survey on Drug Use and Health. While marijuana is the most commonly ...
Oct 06, 2011 |
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Marijuana component could ease pain from chemotherapy drugs
A chemical component of the marijuana plant could prevent the onset of pain associated with drugs used in chemo therapy, particularly in breast cancer patients, according to researchers at Temple University's School of Pharmacy.
Medicine & Health / Medications
Oct 06, 2011 |
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Marijuana blocks PTSD symptoms in rats: study
Marijuana administered in a timely fashion could block the development of post-traumatic stress disorder symptoms in rats, a new study conducted at Haifa University has found.
Medicine & Health / Psychology & Psychiatry
Sep 20, 2011 |
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New tests for 'legal marijuana,' 'bath salts' and other emerging designer drugs
Scientists today reported development of much needed new tests to help cope with a wave of deaths, emergency room visits and other problems from a new genre of designer drugs sold legally in stores and online ...
Chemistry / Analytical Chemistry
Aug 31, 2011 |
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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.
For more information about Cannabis (drug), read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
