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Related Experiment Video

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Author Spotlight: Studying the Impact of Maternal Dietary Deficiencies on Long-Term Offspring Health Outcomes
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The Maternal Nutritional Buffering Model: an evolutionary framework for pregnancy nutritional intervention.

Zaneta M Thayer1, Julienne Rutherford2, Christopher W Kuzawa3

  • 1Department of Anthropology, Dartmouth College, Hinman Box 6047, Hanover, NH 03755, USA.

Evolution, Medicine, and Public Health
|February 5, 2020
PubMed
Summary

Maternal nutritional buffering protects fetuses from short-term dietary changes. Optimizing maternal nutrition before conception and early in development, rather than just during pregnancy, is key for fetal growth and long-term health.

Keywords:
DOHaDbirth outcomesfetal programmingplacentapregnancysupplementation

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Area of Science:

  • Evolutionary biology
  • Maternal-fetal medicine
  • Nutritional science

Background:

  • Fetal nutrition significantly impacts adult health, driving interest in prenatal nutritional interventions.
  • Mammalian females possess evolved mechanisms to buffer fetuses against maternal dietary fluctuations.
  • The eutherian placenta represents a key evolutionary innovation in offspring development.

Purpose of the Study:

  • To review vertebrate strategies for buffering offspring from developmental environmental fluctuations.
  • To present the Maternal Nutritional Buffering Model regarding macronutrient intake during pregnancy.
  • To propose optimized strategies for improving fetal macronutrient delivery and birth outcomes.

Main Methods:

  • Review of evolutionary strategies in vertebrate development.
  • Presentation and discussion of the Maternal Nutritional Buffering Model.
  • Synthesis of evidence on early life and pre-pregnancy nutrition effects.

Main Results:

  • Short-term maternal macronutrient intake changes during pregnancy have minimal effects due to internal buffering mechanisms.
  • Sustained improvements in pre-pregnancy nutrition show potential for better birth outcomes.
  • Birth weight is predicted to be more influenced by chronic pre-pregnancy nutrition than by pregnancy diet.

Conclusions:

  • Maternal internal buffering minimizes the impact of short-term pregnancy macronutrient fluctuations.
  • Nutritional interventions targeting pre-conception and early development are crucial for optimizing fetal macronutrient delivery.
  • Policy solutions should focus on intergenerational health by optimizing maternal nutrition prior to pregnancy.