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Heart Disease Health Center

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Whole Grains Help Your Heart

A Little Oatmeal, Brown Rice, or Rye Bread Cuts Heart Disease Risk
WebMD Health News

Dec. 29, 2004 -- A small cup of oatmeal, a little brown rice, a slice or two of rye bread: Eating just 25 grams of whole grains a day reduces the risk of heart disease by about 15%, new research shows.

The finding comes from a large study of health professionals at the Harvard School of Public Health in Boston, reported in the American Journal of Clinical Nutrition.

Other studies have suggested a 20% to 30% decrease in the risk of heart disease when people eat three or more servings of whole-grain foods daily, writes lead researcher Majken K. Jensen, PhD, an epidemiologist with Harvard's School of Public Health.

Jensen and her colleagues analyzed 14 years' worth of diet and health records from more than 27,000 men aged 40 to 75.

Cold breakfast cereal was the main source of whole grains. Men got 33% of their whole grains via cold breakfast cereals; 18% came from brown rice, 17% from dark bread, and 15% from cooked oats.

Bottom line: there's strong evidence to support a link between higher intakes of whole and lower heart disease risk.

In the study, men with the highest daily intake of whole grain (about 40 grams) cut heart disease risk by almost 20% compared with men who on average ate about 3 grams per day.

In addition, 11 grams of bran daily also reduced heart disease risk. The risk reduction was 30% compared with men who added no bran to their diet. While few men in the study ate wheat germ, researchers believe it offers health benefits, writes Jensen.

The only factor that might skew their data, researchers say, is the overall high-fiber diet. The men who ate more whole grain also tended to be those that ate lots of fruits and vegetables, which also lower heart disease. Also, lifestyle factors like exercise and stress reduction, seen more frequently in the men who eat more whole grains, affect heart disease risk.

Whole Grains More Than Just Fiber

Why are whole grains the miracle ingredient? Whole grains have three parts: bran, germ, and the starchy endosperm. Refined grains are stripped of bran and germ. This takes away nearly all the fiber and nutrients and leaves behind nearly all the calories.

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