Half the world will be overweight by 2035, a health group warns. The World Obesity Federation predicts over 4 billion people will be obese if preventive measures are not implemented, BBC News reported Thursday. The findings show that overweight rates are rising fastest among kids, and that low to middle-income countries in Africa and Asia will undergo the starkest changes. Those countries, the report explains, have dietary preferences which trend towards more highly-processed foods, in addition to increased levels of sedentary behavior, weaker policies on food supply and marketing. Healthcare ...