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Association between early-life mosquito repellents exposure and ADHD-like behaviours

Cheng Zhou1,2, Weiwen Fu1,2, Xinyu Wei1,2

  • 1Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei 230032, China.

Journal of Public Health (Oxford, England)
|June 6, 2024
PubMed

Insights

Early-life exposure to mosquito repellents is linked to increased attention-deficit/hyperactivity disorder (ADHD)-like behaviors in children. The period between 1-3 years old appears to be a sensitive window for this association.

Area of Science:

  • Environmental Health
  • Neurodevelopmental Disorders
  • Pediatrics

Background:

  • Limited research exists on the impact of early-life mosquito repellent exposure on ADHD symptoms.
  • This study investigates associations between mosquito repellent exposure (prenatal to 3 years) and ADHD-like behaviors in children (3-9 years).

Purpose of the Study:

  • To explore the link between early-life mosquito repellent exposure and ADHD-like behaviors.
  • To identify sensitive developmental periods for mosquito repellent exposure concerning ADHD-like behaviors.

Main Methods:

  • Cross-sectional study of 12,275 children in Hefei City, China.
  • Self-reported exposure data from primary caregivers.
  • ADHD-like behaviors assessed using Swanson, Nolan and Pelham, version IV (SNAP-IV) and Conners' Parent Rating Scale (CPRS).
  • Statistical analyses included cross-over analysis, binary logistic regression, and linear regression.

Main Results:

  • Adjusted analysis revealed early-life mosquito repellent exposure is associated with a higher risk of ADHD-like behaviors (OR=1.81).
  • Exposure between 1-3 years old was identified as a sensitive period (OR=1.89).
  • A dose-response relationship was observed, with increased exposure correlating with higher likelihood of ADHD-like behaviors.

Conclusions:

  • Early-life exposure to mosquito repellents is associated with elevated ADHD-like behaviors in children.
  • A critical sensitive period for this association is identified between 1-3 years of age.
Abstract

Keywords:
ADHD-like behavioursearly-lifeindoor air pollutionmosquito repellents exposure

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