A study out of the University of Eastern Finland has taken a closer look at the effects of certain drugs upon the risk of users committing a homicide, with very interesting results. Utilizing Finnish homicide and prescription drug databases, researchers found that using drugs that affected the central nervous system did indeed have an impact on the possible risk of homicidal tendencies. The study is the first of its kind in the world, finding that “the greatest risk was associated with the use of painkillers and tranquillizing benzodiazepines, while anti-depressants were linked only to a slightly elevated risk.”

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