Study: 1 in 10 U.S. deaths linked to high salt

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Researchers at Harvard looked at surveys on salt intake and clinical trials on sodium's relationship to heart attack and stroke. The study adds to evidence that salty packaged and processed foods can take a heavy toll on heart health. The new study is being presented at the American Heart Association's annual meeting in New Orleans.

The same Harvard team previously linked sugary drinks to 25,000 deaths a year.

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