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November 27, 2014

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In this file photo dated Wednesday, Oct. 17, 2007, an overweight person eats in London. Almost one-third of the world population is now fat, and no country has been able to curb obesity rates in the last three decades, according to a new global analysis to be released Thursday, May 29, 2014.

Kirsty Wigglesworth / AP

In this file photo dated Wednesday, Oct. 17, 2007, an overweight person eats in London. Almost one-third of the world population is now fat, and no country has been able to curb obesity rates in the last three decades, according to a new global analysis to be released Thursday, May 29, 2014.