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Obesity in Pregnancy: Implications for Fetal and Postnatal Growth

Chapter

Abstract

Obesity in pregnancy is increasing in line with the excessive weight gains of the general population. Obese women are less likely to get pregnant, either naturally or with assisted conception, more likely to miscarry and more likely to have significant medical problems such as preeclampsia and gestational diabetes. Both mother and baby may be affected by increased risk of thromboses or bleeding and increased problems in labour. Despite existing guidelines, weight gain during pregnancy is often excessive. While such guidelines aim to protect against fetal undernutrition, they are also associated with an increased risk of large for gestational age babies and increased weight retention in mothers post-pregnancy. Such effects are most common in women with the highest pre-pregnancy body mass index. Most studies use the fixed time point of birth to describe in utero growth, but this may misrepresent the fetal growth trajectory. Recent work, including from our group, has produced data on in utero growth and adiposity. Multinational studies, including those from India, have shown that fetal adiposity and birth weight may not be closely related across racial groups. Adiposity at birth, along with subsequent growth rates, may predict propensity for adult disease and as such further studies of perinatal nutrition are important targets for preventative interventions in population health.

Keywords

Gestational Weight Gain Maternal Weight Maternal Weight Gain Pregnancy Weight Gain Weight Gain Recommendation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviations

BMI

Body mass index

CI

Confidence interval

cm

Centimetres

DXA

Dual-energy X-ray absorptiometry

IOM

Institute of Medicine

kg

Kilograms

LBW

Low birth weight

LGA

Large for gestational age

m

Metres

lb

Pounds

SD

Standard deviations

SGA

Small for gestational age

UK

United Kingdom

UN

United Nations

USA

United States of America

WHO

World Health Organization

Notes

Acknowledgements

The original data presented in this chapter were collected and analysed with supervision and input from Professor Clare Collins and Professor Roger Smith during Alexis Hure’s PhD candidature.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Mothers and Babies Research CentreUniversity of NewcastleNewcastleAustralia
  2. 2.Kaleidoscope Neonatal Intensive Care UnitJohn Hunter Children’s HospitalNewcastleAustralia

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