The highs and lows of marijuana use in allergy

In November 2012, Colorado and Washington became the first states to pass initiatives legalizing marijuana use. Since then, voters in 8 states and the district of Columbia have passed similar legislation and Vermont recently announced plans to do so. It is likely that this trend will continue since marijuana sales in legalized states have added significant revenue to state economies. This rapid expansion highlights the need for studies that measure health effects of marijuana use in the population.

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