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Soy, Low-Fat Dairy May Reduce Blood Pressure

Study Shows Replacing Carbohydrates With Low-Fat Dairy and Soy May Improve Hypertension

Substituting Soy, Milk Protein for Carbohydrates

While no change in diastolic pressure was seen, milk protein supplementation was associated with an average lowering of 2.3 points in systolic blood pressure, and soy supplementation was associated with a 2.0 point reduction, compared to carbohydrate supplementation.

The study, which was funded by the National Heart Lung and Blood Institute, appears in the Aug. 2 issue of Circulation.

Nutritionist and American Heart Association spokeswoman Rachel K. Johnson, PhD, MPH, tells WebMD that the study offers solid evidence that substituting soy or milk protein for carbohydrates can have a modest impact on blood pressure.

Johnson, who is a professor of nutrition at the University of Vermont and chair of the American Heart Association committee on nutrition, says one way to do this is to substitute soy milk or low-fat milk for sugar-sweetened beverages.

"We know that sugar-sweetened beverages are the No. 1 source of added sugars in the American diet, and several studies suggest that drinking fewer sugar-sweetened beverages can lower blood pressure," she says. "To me, this is just another nail in the coffin of these beverages."

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