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Governments should tax sugary drinks to fight the global epidemics of obesity and diabetes, the World Health Organization said on Tuesday, recommendations industry swiftly branded "discriminatory" and "unproven".
A 20 percent price increase could reduce consumption of sweet drinks by the same proportion, the WHO said in "Fiscal Policies for Diet and Prevention of Noncommunicable Diseases", a report issued on World Obesity Day.
Drinking fewer calorific sweet drinks is the best way to curb excessive weight and prevent chronic diseases such as diabetes, although fat and salt in processed foods are also at fault, WHO officials said.
"We are now in a place where we can say there is enough evidence to move on this and we encourage countries to implement effective tax on sugar-sweetened beverages to prevent obesity," Temo Waqanivalu, of WHO's department of Noncommunicable Diseases and Health Promotion, told a briefing.
Obesity more than doubled worldwide between 1980 and 2014, with 11 percent of men and 15 percent of women classified as obese - more than 500 million people, the report said.
"Smart policies can help to turn the tides on this deadly epidemic, especially those aimed at reducing consumption of sugary drinks, which is fuelling obesity rates," former New York mayor Michael Bloomberg, a WHO ambassador for noncommunicable diseases, said in a statement.
The global soft drink market is worth nearly US$870 billion in annual sales. 2016 could be the year of the sugar tax, as several large nations consider levies on sweetened food and drinks to battle obesity and fatten government coffers.
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The U.S.-based soft drinks industry's lobbying arm - whose members include Coca-Cola Co, Pepsico Inc and Red Bull - strongly disagreed with what it called "discriminatory taxation".
"It is an unproven idea that has not been shown to improve public health based on global experiences to date," the Washington-based International Council of Beverages Associations said in a statement. A comprehensive approach based on the whole diet was needed for a lasting solution to obesity, it said.
The non-alcoholic beverage industry was making available more options with fewer calories and reformulating existing drinks to reduce calories significantly, the group said.
An estimated 42 million children under the age of five were overweight or obese in 2015, said Francesco Branca, director of WHO's nutrition and health department, an increase of about 11 million over 15 years.
The United States has the most obesity per capita, but China has similar absolute numbers, Branca said, voicing fears that the epidemic could spread to sub-Saharan Africa.
The WHO said there was increasing evidence that taxes and subsidies influence purchasing behavior and could be used to curb consumption of sweet drinks.
"This is tax on sugary drinks which is really by definition all types of beverages containing free sugars and this includes soft drinks, fruit drinks, sachet mixes, cordials, energy and sports drinks, flavored milks, breakfast drinks, even 100 percent fruit juices," Waqanivalu said.
In Mexico, a tax rise in 2014 led to a 10 percent price hike and a 6 percent drop in purchases by year-end, the report said.
