Cloudy with a chance of munchies: Assessing the impact of recreational marijuana legalization on obesity
使用合成控制法，比较华盛顿州与合成反事实，发现娱乐性大麻合法化并未导致肥胖率上升，甚至可能降低了肥胖率。
Obesity in the US arguably constitutes the most significant health epidemic over the past century. Recent legislative changes allowing for recreational marijuana use further create a need to better understand the relationship between marijuana use and health choices, leading to obesity. We examine this relationship by using a synthetic control approach to examine the impact of legalized recreational marijuana access on obesity rates by comparing Washington State to a synthetically constructed counterfactual. We find that recreational marijuana's introduction did not lead to increased obesity rates and may have led to decreases in obesity.