A particular strain of cannabis monitors its effects on the brain, researchers have discovered recently, although the drug's impact on short-term memory had already been established.
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The findings suggest that an ingredient more plentiful in some types of marijuana than in others may help to reduce the memory loss that some users suffer.
The key difference between the types of cannabis is the ratio of two chemicals found in all strains, reports Nature.
Tetrahydrocannabinol (THC) is the primary active ingredient, and is responsible for the effects associated with the classic 'high', including euphoria and giddiness but also anxiety and paranoia.
The second chemical, cannabidiol, has more calming effects, and brain-imaging studies have shown that it can block the psychosis-inducing effects of THC2.
Skunk-type strains of cannabis contain a higher ratio of THC to cannabidiol than do hashish or herbal types.
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She also argues that studying cannabidiol could provide insight into the mechanics of memory formation, and that it may have therapeutic benefits for disorders involving memory deficits.he findings are published in the British Journal of Psychiatry.
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