DIET LA Times (February 8, 2010) — DASH is an acronym for Dietary Approaches to Stop Hypertension — an eight-week clinical trial, reported in 1997, that tested the effects of three diets on 459 adults. Among the group, 133 had high blood pressure for which they were not being treated with a drug.
One diet (the "control") was fairly similar to what many Americans eat; another was similar to that but with more fruits and vegetables and fewer snacks and treats. The third, which came to be known as the DASH diet, was rich in produce but also included a lot of low-fat dairy products and whole grains, as well as less saturated fat, total fat and cholesterol.
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