Harvard Heart Letter

Salt sensitivity: Sorting out the science

Salt sensitivity: Sorting out the science Eating too much salt usually boosts blood pressure, but not in everyone. Understanding the genetic basis of these differences may improve treatment of high blood pressure. Do you know someone who eats lots of salty food — pizza, pickles, pretzels, and the like — but has naturally low blood pressure? That person may be salt-resistant, which means his or her blood pressure doesn’t rise very much in response to a diet…

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