Indoor coal use and early childhood growth
Rakesh Ghosh1, E Amirian, Miroslav Dostal
1Department of Public Health Sciences, University of California, Davis, Davis, CA 95616, USA.
Insights
Indoor coal burning for home heating is linked to reduced height in young children. This pollution may negatively impact skeletal growth up to 36 months of age, posing public health concerns globally.
Area of Science:
- Environmental Health
- Pediatric Growth and Development
- Public Health
Background:
- Indoor air pollution from coal combustion is a widespread concern.
- Early childhood growth is sensitive to environmental exposures.
Purpose of the Study:
- To investigate the association between indoor coal combustion for heating and early childhood growth.
- To determine the impact of coal-related air pollutants on children's physical development.
Main Methods:
- Prospective longitudinal study of 1133 children from birth to 36 months.
- Growth measurements (height-for-age z-score) extracted from medical records.
- Maternal reports of indoor coal use for heating collected via questionnaires.
Main Results:
- Indoor coal use was significantly associated with lower height-for-age z-scores at 36 months (-0.37).
- This corresponds to an approximate height reduction of 1.3 cm in children exposed to indoor coal combustion.
- The effect of coal use on height was modified by postnatal cigarette smoke exposure.
Conclusions:
- Pollution from indoor coal combustion may impair skeletal growth in early childhood.
- The findings highlight potential public health consequences, given the global prevalence of indoor coal use.
- Interventions to reduce indoor air pollution from coal could support healthy child development.
Objective:
To examine whether indoor coal combustion for heating, which releases pollutants into the air, affects early childhood growth.
Design:
A prospective longitudinal study, with growth measurements extracted from medical records of the children's well-child care visits at age 36 months. Data were compiled from self-administered questionnaires and medical records, both completed at 2 time points: delivery and follow-up.
Setting:
Teplice and Prachatice districts in the Czech Republic.
Participants:
A total of 1133 children followed from birth to age 36 months.
Main Exposure:
Maternally reported use of coal for heating.
Main Outcome Measure:
The z score for height for age and sex at age 36 months.
Results:
Adjusted for covariates, indoor coal use was significantly associated with a lower z score for height for age and sex at age 36 months (z score = -0.37; 95% confidence interval, -0.60 to -0.14). This finding translates into a reduction in height of about 1.34 cm (95% confidence interval, 0.51 to 2.16) for boys and 1.30 cm (95% confidence interval, 0.50 to 2.10) for girls raised in homes that used coal. The association between coal use and height was modified by postnatal cigarette smoke exposure.
Conclusions:
Pollution from indoor coal use may impair early childhood skeletal growth to age 36 months. Because a significant proportion of the world population still uses coal indoors, the finding has public health consequences.
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