You may have heard that marijuana is a gateway drug. Republican presidential candidate Chris Christie makes this argument seemingly every chance he gets. Anti-drug groups often make similar claims. The evidence seems convincing enough at first blush: studies show that 99 percent of illicit drug users tried marijuana before they did any other drugs. But on its own, this line of thinking actually is pretty tenuous: we could also safely assume that 99 percent of illicit drug users also tried coffee, or soda, or chocolate milk before moving on to stronger substances. New research out this month in the Journal of School Health could shed some light on this question. A team of researchers from Texas A&M and the University of Florida examined data from […] Read More