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BP reading above normal may increase stroke risk
Highlights
BP Reading Above Normal May Increase Stroke Risk. BP Reading Above Normal May Increase Stroke Risk; Study
London: Anyone with blood pressure that is higher than the optimal 120/80 reading may be more likely to have a stroke, according to a new analysis.
The meta-analysis looked at research on the risk of developing stroke in people with 'prehypertension' or blood pressure higher than optimal but lower than the threshold to be diagnosed with high blood pressure, which is 140/90 mmHg.
“These findings, if confirmed, have important takeaways for the public. Considering the high proportion of the population who have higher than normal blood pressure, successful treatment of this condition could prevent many strokes and make a major difference in public health,” explained study author Dingli Xu of Southern Medical University in Guangzhou, China.
A total of 19 prospective cohort studies with more than 760,000 participants were included in the analysis and participants were followed for time periods ranging from four to 36 years.
From 25 to 54 percent of study participants had pre-high blood pressure.
The analysis found that people with pre-high blood pressure were 66 percent more likely to develop a stroke than people who had normal blood pressure.
The results were the same after researchers adjusted for other factors that could increase the risk of stroke, such as high cholesterol, diabetes and smoking.
The researchers determined that nearly 20 percent of strokes in the study population were due to pre-high blood pressure.
The analysis also divided people with prehypertension into high and low groups, with blood pressure over 130/85 in the high range.
Those in the high range had a greater risk of stroke than those in the low range.
Those in the high range were 95 percent more likely to develop a stroke than those with normal blood pressure, while those in the low range were 44 percent more likely.
“Prehypertension should be managed with changes in diet and exercise to help reduce the risk of stroke,” Xu noted in the study published in the journal Neurology.
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