In 2013, Mexico’s government approved a tax on sugary soft drinks. The country has one of the highest rates of fizzy drink consumption in the world.

Some rural homes do not have access to safe drinking water and a third of schools do not have drinking water. Consequently, carbonated drinks would be sold in schools across the country.

Grace Livingstone speaks to Dr Simon Barquera, director of health and nutrition research at Mexico’s Institute of public health. He faced intimidation and spying attempts for advocating the tax.

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(Photo: Sugary drinks. Credit: PA)