Association between pyrethroid exposure and cardiovascular disease: A national population-based cross-sectional study in the US.
Abstract
OBJECTIVE
Pyrethroids-containing products are widely used as commercial and household insecticides. While animal studies and clinical case reports have shown acute cardiovascular outcomes of pyrethroids exposure, little has been known on the effect of chronic pyrethroid exposure on cardiovascular disease (CVD). We aimed to examine the associations between chronic pyrethroid exposure and CVD in the US adults.
METHODS
Cross-sectional data from the National Health and Nutrition Examination Survey 1999-2002 and 2007-2012 were analyzed. The exposure to pyrethroids was determined as the urinary level of 3-phenoxybenzoic acid (3-PBA), and CVD was ascertained based on self-reported physician diagnoses. Multivariable logistic regression models were fitted to evaluate associations of pyrethroid exposure with CVD, coronary heart disease (CHD), and stroke.
RESULTS
Included were 6,471 participants with a mean age of 44.77 years (standard error, 0.39) for final analyses. The weighted prevalence of CVD, CHD, and stroke was 6.85%, 4.57% and 2.27%, respectively. With adjustments for major confounders, participants in the highest tertile of urinary 3-PBA had higher odds of CVD (odds ratio, 1.58; 95% confidence interval: 1.12, 2.23) and CHD (OR, 1.75; 95% CI: 1.17, 2.61) compared to those in the lowest tertile. There were linear associations for CVD (P for trend = 0.04) and CHD (P for trend = 0.02). However, no significant association was noted for stroke (1.29; 0.78, 2.16) in the main…
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