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June 7, 2026Diabetes Care

Compared with standard care, postnatal dietary interventions significantly reduced BMI (MD −0.46 kg/m2; 95% CI −0.71, −0.20), waist circumference (−1.47 cm; 95% CI −2.39, −0.55), weight (−0.73 kg; 95% CI −1.19, −0.27), HOMA-IR (−0.55; 95% CI −1.04, −0.06), and HbA1c (−0.24%; 95% CI −0.46, −0.02).

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Why the study?

Do postpartum dietary interventions improve cardiometabolic profiles in women with prior gestational diabetes mellitus?

Population

Women with prior gestational diabetes mellitus without overt disease, aged 18-45 years

Comparison

Postpartum dietary interventions vs Standard care

Design

Meta-analysis

Follow-up

12 weeks to 3 years

Authors

APAnthea Ann Ting PheeRFR FooCGClaire Guivarch

Discussion

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Overview

Postpartum dietary interventions yield modest but statistically significant improvements in key cardiometabolic indicators (BMI, weight, HOMA-IR, HbA1c) among women with prior GDM.

Key Points

  • To assess the effectiveness of postpartum dietary interventions on cardiometabolic profiles in women with gestational diabetes mellitus (GDM).
  • Conducted a systematic review and meta-analysis of 21 randomized controlled trials.
  • Evaluated intermediate cardiometabolic markers including BMI, waist circumference, and HOMA-IR.
  • Sample size ranged from 23 to 1,639 participants with follow-up periods of 12 weeks to 3 years.
  • Postnatal dietary interventions significantly reduced BMI by −0.46 kg/m2 (95% CI −0.71, −0.20).
  • Significantly reduced waist circumference by −1.47 cm (95% CI −2.39, −0.55) and weight by −0.73 kg (95% CI −1.19, −0.27).
  • HOMA-IR decreased by −0.55 (95% CI −1.04, −0.06) and HbA1c by −0.24% (95% CI −0.46, −0.02) without improvements in other markers.

Structured PICO

Do postpartum dietary interventions improve cardiometabolic profiles in women with prior gestational diabetes mellitus?

P
Population
Women with prior gestational diabetes mellitus (GDM) without overt disease, aged 18-45 years (19 RCTs included in meta-analysis, individual trial sample sizes 23 to 1,639)
I
Intervention
Postpartum dietary interventions
C
Comparator
Standard care
O
Outcome
Intermediate cardiometabolic surrogate markers (BMI, waist circumference, weight, fasting and 2-h blood glucose, HOMA-IR, HbA1c, systolic and diastolic blood pressure, lipids, and inflammatory biomarkers)surrogate

Postpartum dietary interventions yield modest but statistically significant improvements in key cardiometabolic indicators (BMI, weight, HOMA-IR, HbA1c) among women with prior GDM.

Limitations

  • Heterogeneity across studies
  • Variable adherence to counseling-based interventions
  • Comprehensive standard postpartum care may have limited observed effects

Cite This Study

Phee et al. (2026) studied this question.

synapsesocial.com/papers/6a250be87def13d035e1bdc5https://doi.org/10.2337/dc26-0057
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Association between Glycemic Management during Pregnancy and Postpartum Metabolic Health Outcomes among Women with Gestational Diabetes Mellitus2025
  2. 2Metabolic recovery at 12 months postpartum among individuals with glucose intolerance in pregnancy2025
  3. 3Life-course management of gestational diabetes mellitus: A narrative review2025 · 10 citations
  4. 4Trimester-Specific Serum Lipid Profiles in Gestational Diabetes Mellitus: A Systematic Review, Meta-Analysis, and Meta-Regression2025 · 5 citations
  5. 5Dietary Approaches for Managing Gestational Diabetes Mellitus: A Narrative Review2025