Lower SBP Target for Blacks May Benefit Cognitive Function

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Lower SBP Target for Blacks May Benefit Cognitive Function
Lower SBP Target for Blacks May Benefit Cognitive Function

TUESDAY, Aug. 22, 2017 (HealthDay News) -- For seniors and particularly blacks with hypertension, lowering systolic blood pressure to 120 mm Hg or lower may help prevent cognitive decline, according to a report published online Aug. 21 in JAMA Neurology.

From 1997 to 2007, Ihab Hajjar, M.D., an associate professor of medicine at the Emory University School of Medicine in Atlanta, and colleagues collected data on 1,657 adults aged 70 to 79 who were being treated for hypertension and showed no signs of cognitive decline. During the study period, cognition was assessed using the Modified Mini-Mental State Examination four times and the Digit Symbol Substitution Test five times.

The researchers found that scores on the cognitive tests were linked with the patient's systolic blood pressure. The higher the systolic number, the more test scores declined. Moreover, the declines in test scores were greater in blacks with high systolic blood pressures than they were among whites with similar blood pressure readings.

"The negative health effects of higher blood pressure are more prevalent in blacks, especially related to kidney disease, stroke, and cardiovascular health," Hajjar told HealthDay. "Therefore, it is conceivable that lowering blood pressure in this population would have a far greater impact than other groups for the cognitive effects as well."

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