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Mold exposure during infancy as a predictor of potential asthma development

Yulia Y Iossifova1, Tiina Reponen, Patrick H Ryan

  • 1Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio 45267-0056, USA.

Annals of Allergy, Asthma & Immunology : Official Publication of the American College of Allergy, Asthma, & Immunology
|February 24, 2009
PubMed
Abstract

Insights

Visible mold in homes during infancy significantly increases a child's risk of developing asthma by age 3. Maternal smoking also emerged as a key risk factor for childhood asthma development.

Area of Science:

  • Environmental Health
  • Pediatric Respiratory Medicine
  • Allergy and Immunology

Background:

  • Childhood asthma exacerbations are linked to mold exposure.
  • Understanding early-life environmental factors is crucial for asthma prevention.

Purpose of the Study:

  • To investigate the impact of visible mold and (1-3)-beta-D-glucan exposure in infancy on asthma risk at age 3.
  • To define asthma risk using the Asthma Predictive Index (API).

Main Methods:

  • Home inspections assessed visible mold presence.
  • (1-3)-beta-D-glucan levels were quantified in settled dust samples.
  • Asthma risk was determined by recurrent wheezing and API criteria at age 3.

Main Results:

  • High visible mold exposure during infancy increased the likelihood of a positive API by 7 times.
  • Low (1-3)-beta-D-glucan levels were associated with increased API risk, while high levels showed a decreased risk.
  • Maternal smoking during infancy was a strong predictor of a positive API (aOR, 4.4).

Conclusions:

  • High visible mold and maternal smoking are significant risk factors for developing asthma by age 3.
  • (1-3)-beta-D-glucan exposure appears to have a protective effect against asthma development, contrasting with visible mold.
  • Early environmental interventions targeting mold may be important for asthma prevention in children.

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