News tagged with marijuana
Developing Brains: Alcohol Worse than Marijuana
(PhysOrg.com) -- It appears that when it comes to teen brain development, parents should be more worried about alcohol abuse than marijuana abuse. Two recent studies have been published showing that alcohol ...
Mar 26, 2009 |
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Legalize it? Medical evidence on marijuana blows both ways
Sparked anew by Gov. Arnold Schwarzenegger's call for the state to study the legalization of marijuana, both sides in the smoldering pot debate point to research to bolster their positions.
May 25, 2009 |
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California sprouts marijuana 'green rush'
(AP) -- A drug deal plays out, California-style: A conservatively dressed courier drives a company-leased Smart Car to an apartment on a weekday afternoon. Erick Alvaro hands over a white paper bag to his ...
Jul 18, 2009 |
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Risk of marijuana's 'gateway effect' overblown, research shows
New research from the University of New Hampshire shows that the "gateway effect" of marijuana - that teenagers who use marijuana are more likely to move on to harder illicit drugs as young adults - is overblown.
Sep 02, 2010 |
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New study reveals how cannabis suppresses immune functions
An international team of immunologists studying the effects of cannabis have discovered how smoking marijuana can trigger a suppression of the body's immune functions. The research, published in the European Journal of Im ...
Medicine & Health / Medical research
Nov 25, 2010 |
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Early cannabis users three times more likely to have psychotic symptoms
Young adults who started using cannabis at an early age and used it for several years are at increased risk of being diagnosed with a form of psychosis, of hallucinating or having delusions, a study published Monday found.
Medicine & Health / Psychology & Psychiatry
Feb 27, 2010 |
2.1 / 5 (42) |
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Growing evidence of marijuana smoke's potential dangers
In a finding that challenges the increasingly popular belief that smoking marijuana is less harmful to health than smoking tobacco, researchers in Canada are reporting that smoking marijuana, like smoking ...
Aug 05, 2009 |
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The herbal remedy: Teens use cannabis for relief, not recreation
When legal therapies let them down, some teens turn to cannabis. A new study, published in BioMed Central's open access journal Substance Abuse, Treatment, Prevention and Policy suggests that around a third of teens who sm ...
Apr 22, 2009 |
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Active ingredients in marijuana found to spread and prolong pain
Imagine that you're working on your back porch, hammering in a nail. Suddenly you slip and hit your thumb instead — hard. The pain is incredibly intense, but it only lasts a moment. After a few seconds (and a few unprintable ...
Medicine & Health / Medical research
Aug 13, 2009 |
2.9 / 5 (25) |
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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 helps in battle against cancer: study
The main chemical in marijuana appears to aid in the destruction of brain cancer cells, offering hope for future anti-cancer therapies, researchers in Spain wrote in a study released Thursday.
Apr 02, 2009 |
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Feds to stop prosecuting medical marijuana users (Update)
(AP) -- Pot-smoking patients or their sanctioned suppliers should not be targeted for federal prosecution in states that allow medical marijuana, prosecutors were told Monday in a new policy memo issued by ...
Medicine & Health / Medications
Oct 19, 2009 |
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Pot shot: Scientists find cannabis trigger for forgetfulness
Researchers on Sunday said they had pinpointed the biochemical pathway by which cannabis causes memory loss in mice.
Medicine & Health / Neuroscience
Aug 02, 2009 |
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Is cannabis the answer to Booze Britain's problems?
Substituting cannabis in place of more harmful drugs may be a winning strategy in the fight against substance misuse. Research published in BioMed Central' open access Harm Reduction Journal features a poll of 350 cannab ...
Dec 01, 2009 |
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A severe vomiting sickness with chronic cannabis abuse
Marijuana, a commonly abused drug among high school and college students is linked to a severe form of vomiting syndrome and compulsive bathing behavior. This form of severe vomiting sickness is increasingly recognized with ...
Medicine & Health / Diseases, Conditions, Syndromes
Mar 20, 2009 |
2.2 / 5 (16) |
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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.
