If Mexico’s soda tax really works, why are tax revenues still rising?

In January, the much respected British Medical Journal published a paper which aimed to test the success of the Mexican sugar excise tax, which had been levied on sugar-sweetened drinks.

The paper, entitled “Beverage purchases from stores in Mexico under the excise tax on sugar sweetened beverages: observational study”, was written by M Arantxa Colchero, Juan A Rivera, and Shu Wen Ng – but the most significant co-author was Barry Popkin, a self-described “political activist” who has been a prominent lobbyist for soda taxes in the United States and other countries for many years.

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