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Current Diabetes Reports

, 19:124 | Cite as

Risk of Type 1 Diabetes in the Offspring Born through Elective or Non-elective Caesarean Section in Comparison to Vaginal Delivery: a Meta-Analysis of Observational Studies

  • Justine TanoeyEmail author
  • Amit Gulati
  • Chris Patterson
  • Heiko Becher
Pathogenesis of Type 1 Diabetes (A Pugliese and SJ Richardson, Section Editors)
Part of the following topical collections:
  1. Topical Collection on Pathogenesis of Type 1 Diabetes

Abstract

Background

Caesarean section (CS) has been associated with an increased risk of type 1 diabetes (T1D). The lack of exposure to maternal vaginal and anal microbiome and bypassing the labor process often observed in elective CS may affect neonatal immune system development. This study aims to summarize the effects of elective and non-elective CS on T1D risk in the offspring.

Methods

A systematic literature search was conducted online for publications providing data on elective and non-elective CS with T1D diagnosis in children and young adults, followed by a meta-analysis from selected studies. Newcastle-Ottawa Scale and GRADEpro tool were applied for quality analysis.

Results

Nine observational studies comprising over 5 million individuals fulfilled the inclusion criteria. Crude OR estimates showed a 12% increased T1D risk from elective CS compared to vaginal delivery with significant heterogeneity. Adjusted ORs from seven studies did not show T1D risk differences from either CS category, and heterogeneity was detected between studies. Separate analysis of cohort and case-control studies reduced the heterogeneity and revealed a slight increase in T1D risk associated with elective CS in cohort studies (adjusted OR = 1.12 (1.01–1.24)), and a higher increased risk associated with non-elective CS in case-control studies (adjusted OR = 1.19 (1.06–1.34)).

Conclusion

Summarized crude risk estimates showed a small increased T1D risk in children and young adults born through elective CS compared to vaginal delivery, but with significant heterogeneity. Adjusted risk estimates by study design indicated a slightly increased T1D risks associated with elective or non-elective CS.

Keywords

Autoimmune disease Caesarean section Elective caesarean section Meta-analysis Type 1 diabetes 

Notes

Acknowledgments

The authors thank Dr. Mairead Black (MRCOG, University of Aberdeen, UK) and Mr. Charles S. Algert (Royal North Shore Hospital, Sydney, Australia) for providing additional risk estimates.

Funding Information

The authors JT and HB were supported by the German Federal Ministry of Education and Research (Grant Number 01ER1306 PERGOLA).

Compliance with Ethical Standards

Conflict of Interest

Justine Tanoey, Amit Gulati, Chris Patterson, and Heiko Becher declare that they have no conflict of interest.

Human and Animal Rights and Informed Consent

This article does not contain any studies with human or animal subjects performed by any of the authors.

Supplementary material

11892_2019_1253_MOESM1_ESM.pdf (154 kb)
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11892_2019_1253_MOESM3_ESM.pdf (493 kb)
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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Justine Tanoey
    • 1
    Email author
  • Amit Gulati
    • 1
  • Chris Patterson
    • 2
  • Heiko Becher
    • 1
  1. 1.Institute of Medical Biometry and EpidemiologyUniversity Medical Center Hamburg-EppendorfHamburgGermany
  2. 2.Centre for Public HealthUniversity of BelfastBelfastUK

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