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Evaluation of the association between maternal smoking, childhood obesity, and metabolic disorders: a national toxicology program workshop review.

Publication ,  Journal Article
Behl, M; Rao, D; Aagaard, K; Davidson, TL; Levin, ED; Slotkin, TA; Srinivasan, S; Wallinga, D; White, MF; Walker, VR; Thayer, KA; Holloway, AC
Published in: Environ Health Perspect
February 2013

BACKGROUND: An emerging literature suggests that environmental chemicals may play a role in the development of childhood obesity and metabolic disorders, especially when exposure occurs early in life. OBJECTIVE: Here we assess the association between these health outcomes and exposure to maternal smoking during pregnancy as part of a broader effort to develop a research agenda to better understand the role of environmental chemicals as potential risk factors for obesity and metabolic disorders. METHODS: PubMed was searched up to 8 March 2012 for epidemiological and experimental animal studies related to maternal smoking or nicotine exposure during pregnancy and childhood obesity or metabolic disorders at any age. A total of 101 studies-83 in humans and 18 in animals-were identified as the primary literature. DISCUSSION: Current epidemiological data support a positive association between maternal smoking and increased risk of obesity or overweight in offspring. The data strongly suggest a causal relation, although the possibility that the association is attributable to unmeasured residual confounding cannot be completely ruled out. This conclusion is supported by findings from laboratory animals exposed to nicotine during development. The existing literature on human exposures does not support an association between maternal smoking during pregnancy and type 1 diabetes in offspring. Too few human studies have assessed outcomes related to type 2 diabetes or metabolic syndrome to reach conclusions based on patterns of findings. There may be a number of mechanistic pathways important for the development of aberrant metabolic outcomes following perinatal exposure to cigarette smoke, which remain largely unexplored. CONCLUSIONS: From a toxicological perspective, the linkages between maternal smoking during pregnancy and childhood overweight/obesity provide proof-of-concept of how early-life exposure to an environmental toxicant can be a risk factor for childhood obesity.

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Published In

Environ Health Perspect

DOI

EISSN

1552-9924

Publication Date

February 2013

Volume

121

Issue

2

Start / End Page

170 / 180

Location

United States

Related Subject Headings

  • Toxicology
  • Smoking
  • Risk Factors
  • Pregnancy
  • Obesity
  • Nicotine
  • Metabolic Diseases
  • Humans
  • Female
  • Environmental Pollutants
 

Citation

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Behl, M., Rao, D., Aagaard, K., Davidson, T. L., Levin, E. D., Slotkin, T. A., … Holloway, A. C. (2013). Evaluation of the association between maternal smoking, childhood obesity, and metabolic disorders: a national toxicology program workshop review. Environ Health Perspect, 121(2), 170–180. https://doi.org/10.1289/ehp.1205404
Behl, Mamta, Deepa Rao, Kjersti Aagaard, Terry L. Davidson, Edward D. Levin, Theodore A. Slotkin, Supriya Srinivasan, et al. “Evaluation of the association between maternal smoking, childhood obesity, and metabolic disorders: a national toxicology program workshop review.Environ Health Perspect 121, no. 2 (February 2013): 170–80. https://doi.org/10.1289/ehp.1205404.
Behl M, Rao D, Aagaard K, Davidson TL, Levin ED, Slotkin TA, et al. Evaluation of the association between maternal smoking, childhood obesity, and metabolic disorders: a national toxicology program workshop review. Environ Health Perspect. 2013 Feb;121(2):170–80.
Behl, Mamta, et al. “Evaluation of the association between maternal smoking, childhood obesity, and metabolic disorders: a national toxicology program workshop review.Environ Health Perspect, vol. 121, no. 2, Feb. 2013, pp. 170–80. Pubmed, doi:10.1289/ehp.1205404.
Behl M, Rao D, Aagaard K, Davidson TL, Levin ED, Slotkin TA, Srinivasan S, Wallinga D, White MF, Walker VR, Thayer KA, Holloway AC. Evaluation of the association between maternal smoking, childhood obesity, and metabolic disorders: a national toxicology program workshop review. Environ Health Perspect. 2013 Feb;121(2):170–180.

Published In

Environ Health Perspect

DOI

EISSN

1552-9924

Publication Date

February 2013

Volume

121

Issue

2

Start / End Page

170 / 180

Location

United States

Related Subject Headings

  • Toxicology
  • Smoking
  • Risk Factors
  • Pregnancy
  • Obesity
  • Nicotine
  • Metabolic Diseases
  • Humans
  • Female
  • Environmental Pollutants