Childhood Obesity and Metabolic Imprinting

The ongoing effects of maternal hyperglycemia

  1. Teresa A. Hillier, MD, MS12,
  2. Kathryn L. Pedula, MS1,
  3. Mark M. Schmidt, BA2,
  4. Judith A. Mullen, APRN, BC, CDE3,
  5. Marie-Aline Charles, MD, MPH4 and
  6. David J. Pettitt, MD5
  1. 1Center for Health Research, Kaiser Permanente Northwest, Portland, Oregon
  2. 2Center for Health Research, Kaiser Permanente Hawaii, Honolulu, Hawaii
  3. 3Kaiser Permanente Hawaii, Honolulu, Hawaii
  4. 4Institut National de la Santé et de la Recherche Médicale Unit 258, Villejuif, Paris XI University, Paris, France
  5. 5Sansum Diabetes Research Institute, Santa Barbara, California
  1. Address correspondence and reprint requests to Teresa Hillier, MD, MS, Center for Health Research, Kaiser Permanente Northwest, 3800 N. Interstate Ave., Portland, OR 97227. E-mail: teresa.hillier{at}kpchr.org

Abstract

OBJECTIVE—The purpose of this study was to determine how the range of measured maternal glycemia in pregnancy relates to risk of obesity in childhood.

RESEARCH DESIGN AND METHODS—Universal gestational diabetes mellitus (GDM) screening (a 50-g glucose challenge test [GCT]) was performed in two regions (Northwest and Hawaii) of a large diverse HMO during 1995–2000, and GDM was diagnosed/treated using a 3-h 100-g oral glucose tolerance test (OGTT) and National Diabetes Data Group (NDDG) criteria. Measured weight in offspring (n = 9,439) was ascertained 5–7 years later to calculate sex-specific weight-for-age percentiles using U.S. norms (1963–1994 standard) and then classified by maternal positive GCT (1 h ≥ 7.8 mmol/l) and OGTT results (1 or ≥2 of the 4 time points abnormal: fasting, 1 h, 2 h, or 3 h by Carpenter and Coustan and NDDG criteria).

RESULTS—There was a positive trend for increasing childhood obesity at age 5–7 years (P < 0.0001; 85th and 95th percentiles) across the range of increasing maternal glucose screen values, which remained after adjustment for potential confounders including maternal weight gain, maternal age, parity, ethnicity, and birth weight. The risk of childhood obesity in offspring of mothers with GDM by NDDG criteria (treated) was attenuated compared with the risks for the groups with lesser degrees of hyperglycemia (untreated). The relationships were similar among Caucasians and non-Caucasians. Stratification by birth weight also revealed these effects in children of normal birth weight (≤4,000 g).

CONCLUSIONS—Our results in a multiethnic U.S. population suggest that increasing hyperglycemia in pregnancy is associated with an increased risk of childhood obesity. More research is needed to determine whether treatment of GDM may be a modifiable risk factor for childhood obesity.

Footnotes

  • Published ahead of print at http://care.diabetesjournals.org on 22 May 2007. DOI: 10.2337/dc06-2361.

    Additional information for this article can be found in an online appendix at http://dx.doi.org/10.2337/dc06-2361.

    A table elsewhere in this issue shows conventional and Système International (SI) units and conversion factors for many substances.

    The costs of publication of this article were defrayed in part by the payment of page charges. This article must therefore be hereby marked “advertisement” in accordance with 18 U.S.C Section 1734 solely to indicate this fact.

    • Accepted May 13, 2007.
    • Received November 17, 2006.
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This Article

  1. Diabetes Care vol. 30 no. 9 2287-2292
  1. Online-Only Appendix
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