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Study Finds Recreational Cannabis Use Is Associated With Abnormalities In The Brain. A study investigating recreational marijuana use in young adults has found that users had differences in two areas of the brain, the amygdala and the nucleus accumbens, when compared with non-users.

Study Finds Recreational Cannabis Use Is Associated With Abnormalities In The Brain

The study has been published in the journal Neurobiology of Disease. Cannabis, or marijuana, is the most commonly used illicit drug in the United States, but relatively few studies have investigated how it affects the brain. Although some animal studies have demonstrated changes in regions of the brain involved in learning and memory, attention and decision-making after exposure to the main psychoactive component of cannabis (THC), only a handful of similar studies exist in humans. The few studies that have been carried out also show contrasting results, which may be due to differences in methodologies. They also usually focus on heavy users as oppose to occasional users. The researchers also found that some of the abnormalities were exposure dependent. WHO Report - Conclusions. WHO Project on Health Implications of Cannabis Use: A Comparative Appraisal of the Health and Psychological Consequences of Alcohol, Cannabis, Nicotine and Opiate Use There are health risks of cannabis use, most particularly when it is used daily over a period of years or decades.

WHO Report - Conclusions

Considerable uncertainty remains about whether these effects are attributable to cannabis use alone, and about what the quantitative relationship is between frequency, quantity and duration of cannabis use and the risk of experiencing these effects. On existing patterns of use, cannabis poses a much less serious public health problem than is currently posed by alcohol and tobacco in Western societies. Addiction Research Foundation/World Health Organization (1981) Report of an ARF/WHO Scientific Meeting on the Adverse Health and Behavioral Consequences of Cannabis Use. Allebeck, P. (1991) Cannabis and schizophrenia: is there a causal association? Belkin, B.M. and Gold, M.S. (1991) Opioids. pp. 537-547 in N.S.

Psychedelics and Psychiatry

NORML.org - Working to Reform Marijuana Laws. WHERE GOOD IDEAS COME FROM by Steven Johnson. The Doors of Perception by Aldous Huxley. Aldous Huxley It was in 1886 that the German pharmacologist, Louis Lewin, published the first systematic study of the cactus, to which his own name was subsequently given.

The Doors of Perception by Aldous Huxley

Anhalonium lewinii was new to science. To primitive religion and the Indians of Mexico and the American Southwest it was a friend of immemorially long standing. Indeed, it was much more than a friend. In the words of one of the early Spanish visitors to the New World, "they eat a root which they call peyote, and which they venerate as though it were a deity. " Why they should have venerated it as a deity became apparent when such eminent psychologists as Jaensch, Havelock Ellis and Weir Mitchell began their experiments with mescalin, the active principle of peyote. Mescaline.com : The Molecular Biology of Paradise. Erowid.