Two surprising reasons behind the obesity epidemic: Too much salt, not enough water

Salty french fries may taste good, but they just contribute to dehydration and obesity. William Voon/EyeEm via Getty ImagesScientific studies and media coverage are rife with warnings on how sugar, carbohydrates, saturated fat and lack of exercise contribute to obesity. And tens of millions of Americans are still overweight or obese in large part because of the classic Western diet and lifestyle. As an educator, researcher and professor of medicine, I have spent more than 20 years investigating

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