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“Our findings have important public health implications and provide a sound scientific basis for advising the daily consumption of three servings of whole grain foods to combat cardiovascular disease,” said UK researchers in a study in the American Journal of Clinical Nutrition.
The new trial aimed to see how diets rich in whole grains (whole wheat, with or without oats) stacked up against a refined grain diet when it comes to heart disease risk.
More than 200 middle-aged people at risk for heart disease were divided into three groups:
Blood pressure, cholesterol, triglycerides, and measures of inflammation and insulin sensitivity were assessed throughout the 12-week study.
By the end of the study, systolic blood pressure (the top number in a blood pressure reading) decreased significantly in both whole grain groups compared with the refined grain group, translating to a projected 15% reduction in coronary artery disease incidence and 25% decrease in stroke incidence. (Other markers of cardiovascular disease risk remained unchanged in all groups, except for cholesterol levels, which actually went down in the refined grain group.)
People eating the refined grain diet got more vitamin D and B vitamins in their diets, but this didn’t seem to affect blood pressure levels. “This may indicate that the potential bioactivity of the micronutrients (vitamins and minerals) is more marked when part of the natural grain product is present compared with the fortified food,” said the authors.
With lots of media attention on whole foods, it’s easier than ever to find whole grain versions of your favorite foods in stores.
Here are a few places that you can focus on whole grains that can make a big difference in your health.
(Am J Clin Nutr 2010;92:733–40)
Kimberly Beauchamp, ND, is a licensed, board-certified naturopathic physician with a passion for real food. Dr. Beauchamp received her doctoral degree from Bastyr University, the nation’s premier academic institution for science-based natural medicine. She co-founded South County Naturopaths in Wakefield, RI, where she practiced whole family care with an emphasis on nutritional counseling, herbal medicine, detoxification, and food allergy identification and treatment. Her blog, Eat Happy, helps take the confusion out of healthful eating with real food recipes and up-to-the minute nutrition news that you can use.