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What you need to know about the new blood pressure guidelines




A man has his blood pressure checked July 9, 2003 at Highland Hospital in Oakland, California.
A man has his blood pressure checked July 9, 2003 at Highland Hospital in Oakland, California.

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New guidelines lower the threshold for high blood pressure, adding 30 million Americans to those who have the condition, which now plagues nearly half of U.S. adults.

High pressure, which for decades has been a top reading of at least 140 or a bottom one of 90, drops to 130 over 80 in advice announced Monday by a dozen medical groups.

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Guest:

Gina Kolata,  a science and medicine reporter at The New York Times who’s been following the new guidelines; author of several books, including her latest, “Mercies in Disguise: A Story of Hope, a Family's Genetic Destiny, and the Science That Rescued Them” (St. Martin’s Press, 2017); she tweets @ginakolata