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Related Experiment Video

Updated: Jul 28, 2025

Aggravation of Myocardial Ischemia upon Particulate Matter Exposure in Atherosclerosis Animal Model
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Prenatal exposure to PM2.5 and its constituents with children's BMI Z-score in the first three years: A birth cohort

Shuang Zhou1, Tiantian Li2, Na Han3

  • 1Department of Maternal and Child Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, 100191, China.

Environmental Research
|June 4, 2023
PubMed
Summary
This summary is machine-generated.

Prenatal exposure to fine particulate matter (PM2.5) and its components is linked to higher childhood BMI Z-scores in the first three years. Developing policies to control PM2.5 is crucial for promoting child health.

Keywords:
Body mass indexChildrenElementary carbonOrganic carbonParticulate matterSecondary inorganic constituents

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Area of Science:

  • Environmental Health
  • Pediatric Health
  • Epidemiology

Background:

  • Limited research exists on prenatal fine particulate matter (PM2.5) exposure and childhood growth.
  • No studies have investigated PM2.5 constituents' effects on growth in high-pollution regions (>50 μg/m³).

Purpose of the Study:

  • To examine the association between prenatal exposure to PM2.5 and its constituents with children's BMI Z-score up to three years of age.

Main Methods:

  • A birth cohort of 15,745 mother-child pairs in Beijing, China, was followed for three years.
  • Prenatal exposure to PM2.5 and constituents (OC, EC, SO42-, NO3-, NH4+) was estimated based on residential addresses.
  • Childhood height, weight, and BMI Z-score were measured at ages one, two, and three.

Main Results:

  • Prenatal exposure to PM2.5 and its constituents showed a general association with higher children's BMI Z-scores at ages one, two, and three.
  • Increases in PM2.5, OC, EC, NO3-, NH4+, and SO42- were linked to higher BMI Z-scores.

Conclusions:

  • Prenatal exposure to PM2.5 and its constituents is associated with elevated BMI Z-scores in early childhood.
  • Public health policies targeting harmful PM2.5 constituents are recommended to improve child health outcomes.