A major new study shows treating high blood pressure more aggressively than usual cuts the risk of heart disease and death in people over age 50. The National Institutes of Health announced Friday that preliminary results showed such strong benefits, it was stopping the research about a year early. People are diagnosed with high blood pressure once their readings hit or pass a measurement of 140 over 90. How tightly to control hypertension, especially as people get older, is controversial.
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