Relation between children’s height and outdoor air pollution from coal-burning sources in the British 1946 birth cohort
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Air pollution is associated with a number of health outcomes in childhood. In this study, we investigated whether air pollution is related to children’s height.
The 1946 British birth cohort study recruited 5,362 children born in 1 week in March 1946. Height was measured when the children were aged 2, 4, 6, 7, 11 and 15 years. Data on socio-economic conditions and other characteristics were obtained in interviews. Areas of children’s residence were categorised into four groups of air pollution on the basis of published coal-consumption data.
After controlling for socio-economic factors, we found that air pollution was associated with children’s height at several ages. The association, adjusted for socio-economic factors, was strongest at the age of 7 years, when children in the most polluted areas were 1.2 (95% confidence interval 0.5–1.8) cm shorter than those in the least polluted areas. After the age of 7 years the effect of air pollution diminished and disappeared by the age of 15 years. Further adjustment for birth weight and respiratory illness in childhood did not change this pattern.
Children’s height was inversely associated with air pollution, but the magnitude of the effect depended on age. However, the biological mechanisms linking children’s growth with air pollution are not evident, and it remains to be confirmed whether the relationship is genuine and causal.
KeywordsAir pollution Outdoor Children Height Growth
- Berkey CS, Dockery DW, Wang X, Wypij D, Ferris BG (2003) Height velocity standards for US adolescents. Stat Med 12:403–414Google Scholar
- Douglas JWB, Waller RE (1966) Air pollution and respiratory infection in children. Br J Prev Soc Med 20:1–8Google Scholar
- Eskenazi B, Bergmann JJ (1995) Passive and active maternal smoking during pregnancy, as measured by serum cotinine, and postnatal smoke exposure. I. Effects on physical growth at age 5 years. Am J Epidemiol 142 [9 Suppl] S10–S18Google Scholar
- Lipfert FW (1994) Air pollution and community health. A critical review and data source book, 1st edn. Van Nostrand Reinhold, New YorkGoogle Scholar
- Pikhart, H, Bobak M, Kriz B (2002) Air pollution and height of preschool children in the Czech Republic (Abstract presented at the 14th Conference of the International Society for Environmental Epidemiology in Vancouver, Canada, 11–15 August 2002). Epidemiology 13 [Suppl]:S178Google Scholar
- Raizenne M, Dales R, Burnett R (1998) Air pollution exposures and children’s health. Can J Public Health 89 [Suppl 1]:S43–S53Google Scholar
- Rona RJ (1981) Genetic and environmental factors in the control of growth in childhood. Br Me Bull 37:265–272Google Scholar
- Wadsworth MEJ (1991) The imprint of time: childhood, history and adult life London. Clarendon PressGoogle Scholar