The people of Mexico drink more soft drinks than people in any other country in the world.
Last fall, the government of Mexico made a decision to increase the taxes on soft drinks with sugar.
They said that soft drinks help to create health problems like obesity and diabetes. That tax is starting now.
In the past, Mexico has done other things to reduce sugar and fat in schools, like removing unhealthy foods from vending machines.
But some people say this kind of tax to make people healthier doesn’t work.
In 2011 another country, Denmark, put a tax on fatty foods for the same reason: to improve people’s health. But they removed it a year later because it caused more problems than it solved.