Gestational Diabetes Mellitus

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Overview

Gestational diabetes mellitus (GDM) is a condition of glucose intolerance first recognized during pregnancy, affecting approximately 14% of pregnancies worldwide. It carries risks for both mother and offspring, including increased likelihood of developing type 2 diabetes postpartum.

Microbiome Associations

Emerging research indicates significant gut microbiome alterations in GDM, including both bacterial and fungal dysbiosis ([1], [2]). Microbiome-derived metabolites may contribute to insulin resistance mechanisms ([3]).

Metal Associations

<!— NEEDS VERIFICATION — metal data sparse for GDM specifically; may overlap with type-2-diabetes signature —>

Associated Conditions

GDM shares microbial and metabolic patterns with type 2 diabetes, pcos, and obesity. Women with GDM have significantly elevated risk of developing type 2 diabetes later in life.

Key Studies

  • [1] — Fungal dysbiosis in pregnancy
  • [4] — Bacterial and fungal microbiota in GDM
  • [5] — 16S rRNA gut microbiota analysis

Open Questions

  • What specific metal dysregulation patterns characterize GDM distinct from T2D?
  • Does gestational fungal dysbiosis persist postpartum and influence T2D conversion?
  • Can microbiome-targeted interventions during pregnancy prevent GDM onset?

Cross-References

References (11)

  1. Various (2023). Fungal Dysbiosis 2023 — Gut Fungal Communities in Gestational Diabetes. Scientific Reports. doi:10.1038/s41598-023-45066-7
  2. Wenxin Wang, Sha Lu, Yuanqing Fu et al. (2026). Wang 2026 — Intestinal Fungal Dysbiosis in Gestational Diabetes Mellitus Associated with Adverse Pregnancy Outcomes. BMC Pregnancy and Childbirth. doi:10.1186/s12884-026-08677-2
  3. Sita Manasa Susarla, Oliver Fiehn, Ines Thiele et al. (2024). Susarla 2024 — Microbiome-Derived Metabolites in Early to Mid-Pregnancy and Risk of Gestational Diabetes. BMC Medicine. doi:10.1186/s12916-024-03606-6
  4. Marketa Vavreckova, Natalie Galanova, Martin Kostovick et al. (2022). Vavreckova 2022 — Specific Gut Bacterial and Fungal Microbiota Pattern in the First Half of Pregnancy Is Linked to GDM Development. Frontiers in Endocrinology. doi:10.3389/fendo.2022.970825
  5. J. Wei, Y. Qing, H. Zhou et al. (2022). Wei 2022 — 16S rRNA Gene Amplicon Sequencing of Gut Microbiota in Gestational Diabetes Mellitus. Journal of Endocrinological Investigation. doi:10.1007/s40618-021-01595-4
  6. Marie-Louise H. Rasmussen, Gry J. Poulsen, Poul Videbech et al. (2023). Rasmussen 2023 — Endocrine Disease History and the Risk of Postpartum Depression. The British Journal of Psychiatry. doi:10.1192/bjp.2022.173
  7. Ding R, Ruan Y, He X et al. (2021). Pregnancy complications effect on the nickel content in maternal blood, placenta blood and umbilical cord blood during pregnancy. World J Clin Cases. doi:10.12998/wjcc.v9.i28.8340
  8. Various (2026). Fungal Dysbiosis 2026 — Pregnancy and Gestational Diabetes Reference. BMC Pregnancy and Childbirth. doi:10.1186/s12884-026-08677-2
  9. Chloe Love, Luba Sominsky, Martin O'Hely et al. (2024). Love 2024 -- Prenatal Environmental Risk Factors for Autism Spectrum Disorder and Their Potential Mechanisms. BMC Medicine. doi:10.1186/s12916-024-03617-3
  10. Guifeng Xu, Jin Jing, Katherine Bowers et al. (2014). Xu 2014 — Maternal Diabetes and the Risk of Autism Spectrum Disorders in the Offspring: A Systematic Review and Meta-Analysis. Journal of Autism and Developmental Disorders. doi:10.1007/s10803-013-1928-2
  11. Queenie Li Ling Jun (2025). Li 2025 — Gestational Diabetes Linked to Elevated Risk of Cognitive Decline in Mothers, ADHD and Autism in Children. NUS Medicine Press Release / European Association for the Study of Diabetes (EASD)

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