External influences on the fetus and their long-term consequences
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Updated: Jul 18, 2026

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
1MRC Resource Centre, Southampton General Hospital, Southampton, UK. diwp@mrc.soton.ac.uk
Insights
Low birth weight may increase adult cardiovascular disease risk due to developmental programming. Emerging evidence suggests intrauterine influences also impact immune system development, potentially contributing to autoimmune diseases.
Area of Science:
- Developmental biology
- Immunology
- Epidemiology
Background:
- The developmental origins hypothesis links low birth weight to adult cardiovascular disease.
- This hypothesis posits that early-life environmental exposures cause lasting physiological changes.
- Developmental plasticity or programming explains these long-term effects, supported by animal studies.
Purpose of the Study:
- To explore the role of developmental plasticity in immune system development.
- To investigate the potential link between early-life environment and autoimmune disease pathogenesis.
- To review evidence for programming effects on immune function and autoimmune disease risk.
Main Methods:
- Review of animal studies on intrauterine environment and immune function.
- Analysis of human epidemiological data correlating birth weight with adult health outcomes.
- Examination of preliminary human evidence on early environment and autoimmune diseases.
Main Results:
- Animal studies demonstrate profound, long-lasting effects of the intrauterine environment on immune function.
- Preliminary human data suggest associations between birth weight and autoimmune disease prevalence.
- Evidence indicates developmental programming may extend to immune system development.
Conclusions:
- The intrauterine environment significantly influences immune system development and function.
- Developmental programming is a plausible mechanism linking early-life exposures to autoimmune diseases.
- Further human research is needed to confirm the role of developmental origins in autoimmune disease etiology.
Abstract:
The observation that low birth weight is associated with cardiovascular disease and its risk factors has formed the basis for the 'developmental origins' hypothesis. This hypothesis suggests that the operation of adverse influences during intrauterine life leads to permanent alterations in structure and physiology of the adult phenotype which predispose to a range of common adult diseases. The process is known as developmental plasticity or programming and is strongly supported by studies in experimental animals. Recent evidence suggests that the same processes may affect the development of the immune system and play a part in the pathogenesis of autoimmune disease. Animal studies show that the intrauterine environment has powerful and long-lasting effects on many aspects of immune function. The corresponding human evidence, though preliminary, suggests that birth weight or other markers of the early environment are associated with a range of autoimmune diseases.
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