Harvard Heart Letter

The new blood pressure guidelines: Messages you may have missed

The new guidelines set a lower target and emphasize lifestyle changes. Here’s why eating less salt is important. High blood pressure — a major cause of heart attack and stroke — recently became far more prevalent in the United States, but not because people have become suddenly less healthy. Last fall, new guidelines lowered the threshold for diagnosing the condition, which used to be defined as a blood pressure reading of 140/90…

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