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Heart Disease Health Center

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B Vitamins Reduce Stroke, Heart Disease Deaths

Benefits of Folate and B6 Apply to Men and Women, Researchers Say
WebMD Health News
Reviewed by Laura J. Martin, MD

April 15, 2010 -- Foods rich in B vitamins such as folate and B-6 may reduce the risk of death from stroke and heart problems, Japanese researchers say.

Their study looked at the effects of B vitamins on men and women separately, but findings suggest that foods containing the B vitamins might benefit people of both sexes.

Their primary findings:

Sources of folate include vegetables, fruits, whole or enriched grains, fortified cereals, beans, and legumes. B-6 sources include fish, vegetables, liver, meats, whole grains, and fortified cereals.

Vitamin B6, Folate Fight Heart Disease

The researchers examined data from 23,119 men and 35,611 women between ages 40 and 79 who completed questionnaires about dietary habits as part of the Japan Collaborative Cohort Study.

They found that at a median of 14 years follow-up, 986 people had died from stroke, 424 from heart disease, and 2,087 from all diseases related to the cardiovascular system.

Patients were divided into five groups based on their intake of folate, vitamin B6, and vitamin B12. Researchers compared people with the diets lowest and highest for each nutrient and found that higher consumption of folate and B6 was associated with significantly fewer deaths from heart failure in men. In women, they detected significantly fewer deaths from stroke, heart disease, and total cardiovascular deaths.

Vitamin B12 was not found to be associated with a reduced risk of mortality.

The protective effects of folate and vitamin B6 did not change even when researchers made adjustments for the presence of cardiovascular factors or when people taking supplements were eliminated from the analysis.

The researchers say B6 and folate may fight cardiovascular disease by lowering levels of homocysteine, an amino acid in the blood that is affected by diet, but also heredity.

The researchers say the findings on the value of B vitamins were consistent with studies in North America and Europe. Homocysteine is believed to cause damage to the inner linings of arteries, promoting blood clots.

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