The new blood pressure guidelines: Messages you may have missed
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 millimeters of mercury (mm Hg) or higher. Now, anyone with a reading of 130/80 mm Hg or higher is considered to have high blood pressure (also known as hypertension). Nearly half of adults now fall into this group.
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