Airborne chloride exposure and benign prostatic hyperplasia risk

Area of Science:

• Environmental Health
• Epidemiology
• Urology

Background:

• Airborne chloride (Cl⁻) is an understudied component of particulate matter.
• Potential oxidative and inflammatory pathways linked to Cl⁻ exposure.
• The association between Cl⁻ exposure and benign prostatic hyperplasia (BPH) is unknown.

Purpose of the Study:

• To investigate the association between airborne chloride exposure and the risk of BPH.
• Focus on middle-aged and older Chinese men.
• Identify novel environmental risk factors for BPH.

Main Methods:

• Utilized nationally representative data from 5,452 Chinese men aged 45+ from the 2015 China Health and Retirement Longitudinal Study (CHARLS).
• Correlated participant data with province-level chloride exposure estimates from the China High Air Pollutants (CHAP) dataset.
• Employed mixed-effects logistic regression models with province-level random intercepts.

Main Results:

• Elevated ambient Cl⁻ exposure was consistently linked to heightened BPH risks.
• Each 1 µg/m³ increment in Cl⁻ correlated with a 26% rise in BPH risk (OR = 1.26, 95% CI: 1.07-1.49).
• Sensitivity analyses confirmed the robustness and temporal consistency of findings.

Conclusions:

• Airborne chloride exposure may be a novel environmental risk factor for BPH.
• Findings highlight the potential impact of air pollutants on urological health.
• Further research is warranted to elucidate the mechanisms linking Cl⁻ and BPH.