Trial reportBMC medicine2026
Weight change mediates the effect of lifestyle intervention on postpartum diabetes in women with prior gestational diabetes: a secondary analysis of a randomized clinical trial.
Trial report in BMC medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01554358 (Lifestyle and Genetic Factors on Diabetes Risk in Women With GDM After Delivery), which is not on this map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Lifestyle and Genetic Factors on Diabetes Risk in Women With GDM After Delivery: Tianjin Gestational Diabetes Prevention Program (TGDPP)
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Authors and funding
14 authors.
Funding
Abstract
backgroundWomen with a history of gestational diabetes mellitus (GDM) have a substantial 20-50% risk of developing diabetes postpartum. Understanding the precise mechanisms by which lifestyle interventions prevent diabetes is crucial for optimizing clinical care. This study aimed to quantify the extent to which weight change mediates the observed 46% reduction in postpartum diabetes risk achieved by an intensive lifestyle intervention in women with prior GDM.
methodsThis secondary mediation analysis utilized data from the Tianjin GDM Prevention Program (NCT01554358), a large-scale, 4.5-year randomized controlled trial conducted in China. A total of 1180 women with a recent history of GDM diagnosed according to the 1999 WHO criteria (mean age 32.4 ± 3.50 years; mean BMI 23.9 ± 3.83 kg/m
resultsWeight reduction demonstrated a continuous, dose-dependent association with a lower incidence of postpartum diabetes, without evidence of a threshold effect. Overall, changes in weight indices mediated 13.0-18.8% of the intervention's protective effect. This mediation proportion was significantly higher among women who were overweight at baseline, accounting for 24.3-34.7% of the intervention's benefit. Within this overweight subgroup, changes in waist circumference and body fat individually accounted for over 30% of the total mediated effect.
conclusionsWeight loss is a quantifiable and clinically relevant, though partial, mechanism by which lifestyle intervention reduces postpartum diabetes risk, particularly in overweight women with a history of GDM. These findings underscore the importance of continuous monitoring and management of even modest weight changes as a key component of diabetes prevention strategies for this high-risk population.
trial registrationNCT01554358. Retrospectively registered clinical trial.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.