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A group of scientists from the University of Copenhagen has created a model that shows how some types of ADHD medicine influence the brain's reward system.

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Kathy Gyngell: ‘Let ‘em use’ or ‘lock ‘em up’. Recent demands for drug legalisation suggest that drugs policy is a matter of ‘either/ or’. And that’s what the voters of Colorado and Washington must have believed to risk this ‘putting the lunatics in charge of the asylum’ moment.
The web is flooded with celebration and images of foggy Seattle streets portrayed as some sort of marijuana Valhalla, but the real fog seems to be surrounding what Washington's "legalization" actually entails.

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Previous studies have mostly shown positive effects of cannabis use on cognition in patients with schizophrenia, which could reflect lower neurocognitive vulnerability. There are however no studies comparing whether such cognitive differences have neuronal correlates. Thus, the aim of the present study was to compare whether patients with previous cannabis use differ in brain activation from patients who has never used cannabis.
 
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Colorado's Republican attorney general said the state cannot collect taxes of up to 15 percent on pot sales without further voter approval, casting doubt on how quickly a new state measure legalizing recreational marijuana can be implemented.

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Health officials in Arizona say a small number of doctors have given the go-ahead for about 75 percent of medical marijuana cards issued in the state, raising questions about whether the program is being abused.
 
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Brazilian police killed at least six suspected drug-gang members in two operations early Saturday in Rio de Janeiro slums.

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Although Colorado and Washington became the first states to legalize the recreational use and sale of marijuana with the passage of ballot measures on Tuesday, financial institutions across the country should continue to refuse to do business with marijuana businesses, anti-money laundering experts said.

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“Marijuana activists use phony science, just as global warming deniers do. For years they claimed pot was good for glaucoma and never apologized when research found it could actually make glaucoma worse. They still insist weed isn’t addictive, despite every addiction medicine society saying it is.
 
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Police say a series of Long Beach medical marijuana dispensary raids this week are aimed at shuttering pot shops in the city.Seven medical marijuana businesses were raided this week, including two on Wednesday. Ten people were arrested and investigators seized cash and pot.

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