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[Comment] Salt and heart disease: a second round of “bad science”?

2 years ago, Andrew Mente and colleagues,1 after studying more than 130 000 people from 49 different countries, concluded that salt restriction reduced the risk of heart disease, stroke, or death only in patients who had high blood pressure, and that salt restriction could be harmful if salt intake became too low. The reaction of the scientific community was swift. “Disbelief” was voiced that “such bad science” should be published by The Lancet.2 The American Heart Association (AHA) refuted the findings of the study, stating that they were not valid,3 despite the AHA for many years endorsing products that contain markedly more salt than it recommends as being “heart healthy”.

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