Last updated September 2, 2026
Key finding
The incidence of GDM was significantly reduced in the fiber supplement group compared with the control group: 8.3 vs. 24.0% (χ² = 4.40, p = 0.036).
This study investigated the impact of dietary fiber intake on gestational diabetes mellitus (GDM) in overweight/obese pregnant women, finding significant reductions in GDM incidence with fiber supplementation.
Quick read
The essential study design details in one scan.
EvidenceScore™
Moderate
Study type
RCTs
Follow-up
Extended (5–20+ y)
Risk of bias
Some Concerns
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Plain-language summary
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Study focus
This study investigated the impact of dietary fiber intake on gestational diabetes mellitus (GDM) in overweight/obese pregnant women, finding significant reductions in GDM incidence with fiber supplementation.
Gestational diabetes can lead to complications for both mother and child, including increased risk for type 2 diabetes later in life. This study highlights the potential of dietary interventions, specifically fiber supplementation, to reduce GDM incidence in high-risk populations, which could improve maternal and neonatal health outcomes.
The study's sample size may limit the generalizability of the findings. The long-term effects of fiber supplementation beyond pregnancy were not assessed. Potential confounding factors were not fully controlled for in the analysis.
Published in
Publication details and source links for this paper.
Dong-Yao Z, De-Cui C, Yan-Nan C, et al. Dietary Fiber Intake During Pregnancy and the Prevention of Gestational Diabetes Mellitus in Overweight/Obese Women. Frontiers in Pharmacology. 2022;13:922015. doi:10.3389/fphar.2022.922015
The incidence of gestational diabetes mellitus was significantly lower in the fiber supplement group (8.3%) compared to the control group (24.0%), p = 0.036.
Body weight gain was significantly lower in the fiber supplement group (1.99 kg) compared to the control group (2.53 kg), p = 0.022.
None of the women in the fiber supplement group experienced preterm birth, while 12.0% in the control group did, p = 0.040.
Evidence network
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This study contributes evidence to Control Group Usual Activity, Fiber supplement group and Fasting Plasma Glucose (FPG), Body weight, Excessive gestational weight gain, and 3 more.
This study contributes evidence to
Primary intervention
Control Group Usual Activity
Primary outcomes
Primary intervention
Intervention and outcome relationships this study adds to the evidence network.
Editorial context
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Evidence network role
This section describes how the study fits into the current evidence network. It does not determine whether an intervention works on its own.
4
Related topics
7
Evidence pairs
1313
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Contributes evidence
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Contributes evidence
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Contributes evidence
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Contributes evidence
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Primary evidence
Evidence topic
matched_outcome
Related evidence
Evidence topic
Save evidence
Core evidence
The primary outcomes reported in this study.
Control Group Usual Activity → Fasting Plasma Glucose (FPG)
Control Group Usual Activity → Fasting Plasma Glucose (FPG)
Fiber supplement group → Excessive gestational weight gain
Fiber supplement group → Excessive gestational weight gain
Fiber supplement group → Fasting Plasma Glucose (FPG)
Fiber supplement group → Fasting Plasma Glucose (FPG)
Fiber supplement group → Gestational diabetes mellitus incidence
Fiber supplement group → Gestational diabetes mellitus incidence
Fiber supplement group → Rate of preterm delivery (<37 weeks)
Fiber supplement group → Rate of preterm delivery (<37 weeks)
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Relationships organized using the Dediabetes Evidence Intelligence™ framework.
This study contributes to evidence on Control Group Usual Activity and Fasting Glucose, Control Group Usual Activity and Adipokine and Angiogenic Markers.
This study contributes to the evidence on the following intervention-outcome relationships.
Physical Activity
Physical Activity
Diet and Nutrition
Curated evidence collections and hubs this study is part of.
All studies on Control Group Usual Activity
Contributes to Control Group Usual Activity evidence base.
All studies measuring Fasting Glucose
Measures Fasting Glucose as a key outcome.
All studies measuring Adipokine and Angiogenic Markers
Measures Adipokine and Angiogenic Markers as a key outcome.
All studies measuring Body Weight
Measures Body Weight as a key outcome.
All studies on Fiber supplement group
Contributes to Fiber supplement group evidence base.
Jump to pre-filtered views in Evidence Explorer.
4 results
2 results
4 results
1 results
4 results
Generated from the study's connected evidence using Evidence Intelligence™.
Current evidence does not show a clear benefit of Control Group Usual Activity for fasting plasma glucose (FPG).
ConsistencyScore™: Results are consistent across studies.
Ranked evidence signals
Fasting Plasma Glucose (FPG)
EvidenceScore™ Strong | EvidenceScore™ 79.0 | neutral | ConsistencyScore™ Consistent | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
Fiber supplement group appears to affect body weight.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
Body weight
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
Fiber supplement group appears to improve excessive gestational weight gain.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
Excessive gestational weight gain
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
Fiber supplement group appears to improve fasting plasma glucose (FPG).
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
Fasting Plasma Glucose (FPG)
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
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