-- Robert Preidt
SUNDAY, March 25 (HealthDay News) -- Isoflavones -- a compound
found in foods such as soy milk, green tea, tofu and peanuts -- may
help lower blood pressure in young adults, new research
The researchers also found that isoflavones may be of particular
benefit for black American adults, nearly 42 percent of whom are
estimated to have high blood pressure, also known as
One expert not connected to the study said there is reason to
believe that isoflavones could help the heart.
Isoflavones "dilate the vessels by increasing the release of
nitric oxide," explained Dr. Suzanne Steinbaum, director of women
and heart disease at Lenox Hill Hospital in New York City. She said
the new study, "brings to light a compelling dietary recommendation
that can help control hypertension in younger patients."
In the new study, investigators examined data from more than
5,000 participants in a major study funded by the U.S. National
Institutes of Health.
The analysis revealed that those who consumed the highest
amounts of isoflavones per day (more than 2.5 milligrams [mg]) had
an average 5.5 mmHg lower systolic pressure (the top number in a
blood pressure reading) than those who consumed less than 0.33 mg
of isoflavones per day.
To understand what that means to the everyday diet, an 8-ounce
glass of soy milk has about 22 mg of isoflavones and 100 grams of
roasted soybeans have as much as 130 mg of isoflavones, the
The study was to be presented Sunday at the annual meeting of
the American College of Cardiology (ACC) in Chicago.
"What's unique about this study is that the results are very applicable to the general population. Our results strongly suggest a blood pressure benefit for moderate amounts of dietary isoflavone intake in young black and white adults," lead investigator Safiya Richardson, a graduating medical student at Columbia University's College of Physicians and Surgeons in New York City, said in an ACC news release.
"Our study is the first to show a benefit in African-Americans, who have a higher incidence of high blood pressure, with an earlier onset and more severe end-organ damage," she added.
The findings "could mean that consuming soy protein, for
example, in combination with a DASH diet -- one that is high in
fruits and vegetables, low-fat dairy and whole grains -- could lead
to as much as a 10 mmHg drop in systolic blood pressure for
pre-hypertensives [people on the threshold of high blood pressure],
greatly improving their chances of not progressing to
hypertension," Richardson said.
"Any dietary or lifestyle modification people can easily make that doesn't require a daily medication is exciting, especially considering recent figures estimating that only about one-third of American hypertensives have their blood pressure under control," she added.
It's believed that isoflavones boost the body's production of
enzymes that create nitric oxide, which helps to widen blood
vessels and thereby reduce blood pressure.
Findings presented at medical meetings are typically considered
preliminary until published in a peer-reviewed journal.
The American Heart Association has more about the
prevention and treatment of high blood
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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