What are the long-term effects of PM2.5 components on the prevalence of hypertension? latrobe hypertension bloodpressure health disease smog pollution airpollution
By Neha MathurJan 30 2023Reviewed by Danielle Ellis, B.Sc. In a recent study published in Environmental Research, researchers conducted a nationwide cross-sectional analysis of the long-term consequences of particulate matter and its five components on hypertension among participants from 13 Chinese provinces between March 1 and July 31, 2021. The PM2.5 components analyzed in this study were organic matter , black carbon , sulfate , nitrate , and ammonium .
The fine particulate matter, i.e., components with an aerodynamic diameter ≤2.5 μm , has been increasingly recognized as a cause of hypertension. Yet, few studies have investigated their long-term effects. Also, studies have not evaluated the magnitude of each PM2.5 component's contribution to hypertension.
Based on the eXtreme Gradient Boosting method, SHAP helped the researchers identify the most pertinent feature for hypertension and showed how much a particular feature of hypertension altered the prediction of the study model. Finally, they compared the SHAP value of each PM2.5 component and averaged it by the aggregate value computed from the model with all five components.
As expected, the researchers noted a significant correlation between long-term exposure to PM2.5 and its components and the increased frequency of DBP and hypertension. Males with hypertension were more susceptible to NO3−, NH4+, and SO42−. They were also at a higher risk of DBP due to these PM2.5 components. Likewise, the elderly were at a higher risk of all three conditions due to increased exposure to PM2.5 and all its five components. In fact, PM2.
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