(BlackDoctor.org) — It’s well known that blacks are at greater risk for developing high blood pressure than whites are, but new research now suggests they also progress more rapidly from a pre-hypertension state to full-blown high blood pressure.
The findings, published online and in the October print issue of Hypertension, suggest that intervening earlier with medication, as well as lifestyle changes, may help prevent high blood pressure and some of its consequences among people who are at the greatest risk.
Pre-hypertension is defined as a systolic (pumping) pressure between 120 and 139, and a diastolic (resting) reading between 80 and 89. High blood pressure (or hypertension) is a blood pressure reading of 140/90 or higher. A blood pressure reading of less than 120/80 is considered ideal.
Researchers analyzed electronic medical records of 18,865 adults aged 18 to 85 from 197 health clinics in the southeastern United States between 2003 and 2009. Thirty percent of the study participants were black.
According to the findings, blacks had a 35 percent greater risk of progressing from pre-hypertension to hypertension and tended to develop the condition up to one year earlier than their white counterparts. Exactly why this occurs is not fully understood.
“This means the well-known end-points of hypertension — such as kidney failure, stroke, heart failure — could occur faster in blacks than in whites,” said study author Anbesaw Selassie, an epidemiologist at the Medical University of South Carolina in Charleston.