Gestational diabetes & diabetes in pregnancy
Low fertility and delayed childbearing: Independent and combined effects on gestational diabetes risk in high-income women
Authors' conclusion
Advanced maternal age and higher BMI at delivery are independent predictors of GDM in women with low and delayed fertility
Study context
- Population
- Term women with low and delayed fertility who delivered at Abano Polyclinic, Italy, January 2022–August 2025
- Participants
- 2,560 women
- Exposure
- Women with gestational diabetes mellitus (GDM) vs women with normal OGTT
- GDMn = 231
- Outcome
- GDM prevalence
Methodological detailssingle-centre
- Single-centre
Main finding
As reported in the abstract
GDM
9.9%
231
- Kaplan-Meier: significant age-related increase in GDM probability (log-rank χ2 = 31.5)
- P < 0.001
- No age-parity interaction
- P = 0.55
Observational data: associations, not effects.
Further findings
Maternal age
P < 0.001
BMI at delivery
Parity
- Parity was similar between groups
BMI at delivery
- Higher BMI remained independently associated with GDM after adjustment for maternal age and parity
Original publication
Low fertility and delayed childbearing: Independent and combined effects on gestational diabetes risk in high-income women. Diabetes Res Clin Pract. Published 22 August 2026. doi:10.
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