Nutrition News
DASH to Dairy to Lower Blood Pressure
New research adds to the body of evidence that dairy foods may indeed affect blood pressure and overall heart health. Findings from the Optimal Macronutrient Intake Trial to Prevent Heart Disease (OmniHeart) suggest that consumers have several options when it comes to eating a heart-healthy diet.
Study participants with higher than normal blood pressure followed three different diets during the course of the study: 1) a carbohydrate-rich diet, 2) a higher protein diet, and 3) a higher unsaturated fat diet. Each of the three diets met parameters of the DASH (Dietary Approaches to Stop Hypertension) diet previously proven as effective in lowering blood pressure, and met the major recommendations of the 2005 Dietary Guidelines for Americans, emphasizing lowfat dairy foods, fruits, vegetables and whole grains. All three dietary patterns led to reduced blood pressure, improved cholesterol levels and reduced estimated coronary heart disease risk.
A second study, published in Hypertension, analyzed diet supplement records from 4,680 men and women (ages 40 to 59) from Japan, China, UK and U.S. Results showed that dietary phosphorus, a nutrient found in dairy and other foods, was associated with reduced blood pressure. In addition to phosphorus, dietary calcium and magnesium were also shown to lower blood pressure significantly.
Both studies suggest that dairy foods and the nutrients they contain can be part of a heart-healthy diet.
Swain J, et al. Characteristics of the diet patterns tested in the Optimal Micronutrient Intake Trial to Prevent Heart Disease (OmniHeart): options for a heart-healthy diet. Journal of the American Dietetic Association.2008;108:257-265.
Elliott P, et al. Dietary phosphorus and blood pressure: international study of macro- and micro-nutrients and blood pressure. Hypertension. 2008;51:669-675.
Scientific synopsis provided by Sarah Hess, MS, RD, LDN, New England Dairy & Food Council