Type 2 & other diabetes

Endometriosis subtypes and risk of type 2 diabetes: the Advancing Research on Cardiovascular Health and Endometriosis Study (ARCHES) retrospective cohort study

DiabetologiaPublished Retrospective cohort study

An erratum to this article was published (Diabetologia, Dec 2026 ↗)

Main finding · Incident T2DResult — go to the resultAdjusted hazard ratio 1.46 95% CI 1.43–1.50

Authors' conclusion

Endometriosis was associated with increased type 2 diabetes risk, with substantial heterogeneity by subtype and metabolic context. Associations were strongest among individuals who are traditionally considered at lower baseline risk, although these findings should be interpreted cautiously given the potential for residual confounding and detection bias.

Study context

Population
Individuals assigned female at birth, Utah Population Database (1996–2021)population-based cohort
Participants
2,939,364 individuals
Exposure
Endometriosis vs no endometriosis
  • Endometriosisn = 99,978
Outcome
Incident T2D (ICD codes)
Follow-up
Mean 10.8 years
Methodological detailspopulation-based, dynamic cohort, time-varying exposures
  • Population-based
  • Dynamic cohort
  • Time-varying exposures

Main finding

Incident T2D

Adjusted hazard ratio

1.46

95% CI 1.43–1.50

Endometriosisvs No endometriosis
aHR 1.46 (95% CI 1.43–1.50)

As reported in the abstract

Observational data: associations, not effects.

Further findings

OutcomeaHR (95% CI)
T2D by subtype: 'other site' endometriosisSpecified sitevs No endometriosis2.67 (2.51–2.84)
T2D by subtype: 'other site' endometriosisUnspecified sitevs No endometriosis2.47 (2.35–2.60)
T2D, premenopausal womenStronger than in postmenopausal women1.55 (1.50–1.60)
T2D, BMI <30 kg/m²Stronger than in higher BMI categories2.39 (2.34–2.44)

T2D by subtype: 'other site' endometriosis

Risk varied by subtype; strongest associations for 'other site' endometriosis

T2D by history of GDM

Associations present regardless of history of GDM

Original publication

Endometriosis subtypes and risk of type 2 diabetes: the Advancing Research on Cardiovascular Health and Endometriosis Study (ARCHES) retrospective cohort study. Diabetologia. Published 6 August 2026. doi:10.1007/s00125-026-06828-w

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