While scanning the latest news, it’s easy to feel as if we’ve traveled back in time to the 1980s. “Just say no?” “The war on drugs?” After nearly three decades, there’s still little evidence to suggest these outdated addiction prevention and treatment strategies work, and some evidence even shows that they are counterproductive. Yet, they continue to influence how we both talk about and treat addiction. And just last month, dialogue about the “gateway drug theory” resurfaced in the New York Times, raising the question: is this highly publicized hypothesis, which also originated in the final quarter of the 20th century, grounded in fact or fiction? We answer this question – and more – below. WHAT IS THE GATEWAY DRUG THEORY?First popularized in the 1980s, the gateway drug theory purports that adolescent use of tobacco, alcohol or marijuana increases an individual’s risk of using and/or developing addiction to other licit and...