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Air pollution and type 1 diabetes in children

Eba H Hathout1, W Lawrence Beeson, Mariam Ischander

  • 1Department of Pediatrics, Loma Linda University School of Medicine, Loma Linda, CA, USA. ehathout@ahs.llumc.edu

Pediatric Diabetes
|April 25, 2006
PubMed

Insights

Increased exposure to air pollutants like ozone and sulfate may contribute to type 1 diabetes in children. Factors such as passive smoking and early formula feeding may also accelerate disease onset.

Area of Science:

  • Environmental Health
  • Pediatric Endocrinology
  • Epidemiology

Background:

  • Rising global incidence of type 1 diabetes in young children remains largely unexplained.
  • This study investigates the potential link between air pollutant exposure and type 1 diabetes development.

Purpose of the Study:

  • To quantitatively assess the role of specific ambient air pollutants in the development of type 1 diabetes in children.
  • To identify environmental and lifestyle factors associated with type 1 diabetes onset.

Main Methods:

  • Retrospective study of 402 children (102 with type 1 diabetes, 300 controls).
  • Calculated cumulative exposure to five air pollutants based on zip code and time from birth to diagnosis.
  • Statistical analysis included chi-squared tests, t-tests, and logistic regression.

Main Results:

  • Significant odds ratios for cumulative exposure to ozone (OR=2.89) and sulfate (OR=1.65) in type 1 diabetes cases.
  • Higher prevalence of passive smoking in children with diabetes (30% vs 10%).
  • Lower rates of daycare attendance and breastfeeding in diabetic children; family history factors also noted.

Conclusions:

  • Cumulative exposure to ambient ozone and sulfate may increase predisposition to childhood type 1 diabetes.
  • Early infant formula feeding and household passive smoking may accelerate disease onset.
Abstract

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