Clipping of news on Brazilian Culture, Law and Citizenship
03/26/2012
This article was translated by an automatic translation system, and was therefore not reviewed by people.
Regular intake of these foods can lower blood pressure
Grapes are rich in potassium and antioxidants, and soy isoflavones in, weapons can be effective in preventing hypertension, an important cardiovascular risk factor, according to two studies published on Sunday during a major cardiology conference in the United States.
The papers were presented at the 61st annual conference of the American College of Cardiology, held in Chicago, Illinois, during the weekend.
With regard to grapes, this is the first scientifically controlled study to confirm the effect of daily consumption of this fruit in lowering blood pressure in pre-hypertensive individuals.
The study took 46 men and women to measure the consumption of grapes three times a day, compared with the consumption of cookies and other foods that contain no fruits or vegetables.
For soybeans, the researchers took samples from a study begun in 1985 to analyze the risk of coronary heart disease in young American adults.
This research, funded by National Institutes of Health (NIH, its acronym in English) included 5115 white and black Americans 18 to 30 years that examined at different time intervals.
The study presented on Sunday focused on the effects of isoflavones, which contains soy in large quantities to lower blood pressure.
Isoflavones are close to the estrogen substances, female hormone which contributes to the production of nitric acid, known to relax blood vessels and reduce blood pressure.
People with prehypertension have systolic blood pressure between 120 and 139 mm / Hg and diastolic pressure between 80 and 89 mm / Hg.
One in three American adults fit this definition, according to the Centers for Disease Control and Diabetes Prevention (CDC) of the United States. The study's lead author, Dr. Harold Bays, director of the Research Center of Louiseville (Kentucky), talked about metabolism and atherosclerosis:
- Our study shows that if you can choose between eating grapes or chocolate chip cookie, much better off choosing the grapes, at least serve to reduce blood pressure.
The results do show that people who ate grapes had a clear lower your systolic pressure in the fourth, eighth and twelfth weeks (from -4.8% to -7.2% or less unless 6 10.2 mm / Mg).
Dr. Bays has not identified as grapes act on blood pressure, but noted that the fruits are very rich in potassium and antioxidants known as polyphenols.
- Grapes are rich in potassium, known to lower blood pressure.
The Bays research was funded by an organization that encourages the consumption of fruit and is subsidized by the same producers Californians.
He said it was necessary to make more extensive clinical trials to confirm their results.
In the study group on the isoflavone, those who consumed the most amount of this substance daily (more than 2.5 milligrams) had a systolic blood pressure clearly lower (-5.5 mm / Mg on average) than individuals who ate less than 0.33 mg.
Just take a glass of soy milk, which contains 22 mg of isoflavones, Safiya said Richardson, lead author of the study and who is completing his doctorate in medicine from Columbia University (New York).
This research also showed that African Americans, ethnic group with a strong tendency to hypertension, were benefited by the effects of isoflavones, said Richardson.
According to the scientist, this study would facilitate clinical trials to scientifically prove the action of isoflavones on blood pressure.
Source: The Day on Line
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This article was translated by an automatic translation system, and was therefore not reviewed by people.