Last year Mexico became the first nation in the world to impose a surtax on sweetened soft drinks. Policymakers justified the move by pointing out that people in Mexico consume more soda per capita than anywhere else in the world, a trend they argue fosters the nation’s high rates of obesity and diet-related disease. While governments around the world have also used economic incentives–or, in this case, disincentives–as a means of bolstering public health, Mexico’s soda tax does so on a much grander scale. A year later, in July 2015, public health researchers reported that consumption of soft drinks in Mexico fell by more than five percent. Many people hope for similar measures in the United States. California and New York are considering similar policies. New York City tried something similar a few years ago, before a judge overturned it, and the Navajo Nation just passed a junk food tax.