It’s only been two years but Mexico’s sugary drinks tax seems to already be yielding results. A new study says that in the first year following the introduction of the tax, Mexicans were drinking on average 6% less sugary drinks. During 2014 the average person bought four fewer litres of sodas. The move has impacted low socioeconomic households the most. The tax is part of a national plan to fight obesity in the country. Experts are cautious to say that while the introduction of higher taxes in sugary foods and beverages can help, it should also be accompanied by other measures, such as health education.