Genetic analysis reveals a causal relationship between air pollution and erectile dysfunction

Area of Science:

• Environmental Health
• Genetics
• Urology

Background:

• Erectile dysfunction (ED) is a prevalent condition with multifactorial causes.
• Air pollution is increasingly recognized as a global health concern.
• The specific causal link between air pollutants and ED requires further investigation.

Purpose of the Study:

• To investigate the potential causal relationship between exposure to fine particulate matter (PM2.5) and the risk of developing erectile dysfunction (ED).

Main Methods:

• Utilized a two-sample Mendelian randomization (MR) approach with genetic data from the UK Biobank.
• Integrated data from three cohorts comprising 223,805 healthy controls and 6,175 ED patients.
• Employed inverse variance weighted (IVW) analysis, supplemented by MR-Egger regression, weighted median, and Cochran's Q test for robustness and quality control.

Main Results:

• A significant positive association was found between genetically predicted PM2.5 levels and an increased risk of ED (IVW OR = 1.65, 95% CI = 1.12-2.43, P = 0.010).
• This association remained significant after Bonferroni correction, indicating a robust finding.
• Multivariate MR analysis confirmed PM2.5 as an independent causal risk factor for ED, with no evidence of horizontal pleiotropy or heterogeneity.

Conclusions:

• This study presents the first genetic evidence establishing PM2.5 as an independent risk factor for ED.
• Controlling air pollution is highlighted as a critical public health strategy for the global prevention of ED.