More than 40 percent of African Americans suffer from high blood pressure, according to a leer objective released by the Centers for Disease Control (CDC) .
Many theories exist about why shaded Americans experience higher levels of hypertension disease than other groups. One major peek suggested a connection between high levels of uric acid and hypertension among blacks as a possible explanation. Researchers and medical professionals already know that excessive levels of uric acid are a major cause of kidney disease. African Americans also experience higher levels of kidney disease.
Other theories include a failure by bodily systems to eliminate excessive salt in the urine and the presence of higher levels of the hormone aldosterone. Let's stare briefly at each of these.
Do High Uric Acid Levels Cause Hypertensionallinspect results, published in the American Heart Association's Hypertension Journal in 2006, revealed a stronger connection between high uric acid levels and high blood pressure (HBP) among African Americans than for other groups. The level of uric acid in the body is influenced by diet. For example, eating astronomical amounts of protein can increase uric acid levels.
Usually, uric acid is eliminated through urine. But, when the body produces excessive amounts of uric acid and the kidneys fail to lift enough of it, then it can make up in the blood.
None of the 9,104 participants in the peek, conducted by Wake Forest University Baptist Medical Center, had HBP when the peer began. Participants represented multiple races and ethnic groups and ranged in age from 45 to 64. This was the first time that African Americans had been included in this type of contemplate in numbers that were statistically essential. All participants' blood pressure and uric acid levels were examined every three years.
Participants whose uric acid levels registered in the highest quartile had an increased risk for high blood pressure of about 15 percent. The strongest link between uric acid and hypertension was found among gloomy men. The interracial findings were particularly telling. African American women whose results registered in the highest quartile were at a 30 percent higher risk for hypertension than African American women who ranked in the lowest quartile. African American men in the highest percentile had double the risk of African American men in the lowest percentile.
The implications from the view suggest that if doctors can lower uric acid levels in patients, they might be able to prevent or control high blood pressure in unlit Americans and other groups with higher than normal levels. A blood test for uric acid levels could predict whether an individual was at risk.
Does Excessive Salt in the Urine Cause HBP? In a healthy body, stress is relieved by the release of sodium into the bloodstream. That salt is then later removed from the body through urine. However, in a fresh stare, researchers found that this fail-safe system breaks down in about one-third of African American youths. The result is that excessive salt levels remain in the body, putting them at risk for high blood pressure now and as they grow older.
The witness of 168 sad and white youths by researchers at the Medical College of Georgia found essential differences between the functioning of this natural blood pressure regulator system in the two groups. The system, known as renin-angiotensin-aldosterone (RAAS), works by instructing the kidneys to hold salt when blood pressure is too improper and excrete it as urine when it is too high.
Researchers are doing further studies to resolve whether a genetic mutation may interfere with the genuine release of salts from the kidneys in African Americans.
Is Too considerable Aldosterone the Cause? Another possible cause may be aldosterone, according to a peek conducted at the Medical College of Wisconsin. Aldosterone is a hormone secreted by the adrenal glands that causes kidneys to keep salt.
The gape, whose findings appeared in the September 17, 2009, edition of the American Journal of Hypertension, compared African Africans with HBP to those without it. The 224 blacks with HBP had statistically primary higher levels of aldosterone than the 217 blacks who did not have it.
The research, funded by the National Institutes of Health's National Heart, Lung and Blood Institute for more than a decade, suggests that aldosterone not only contributes to high blood pressure but to heart, kidney, and blood vessel diseases among African Americans as well.
Researchers continue to scrutinize these and other theories that may one day scream the key to preventing high blood pressure among all groups.
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