Last updated August 22, 2026
Key finding
GDM incidence declined from 25.1% to 20.7% (p = 0.025)
A nutritionist-guided video intervention improved adherence to the Mediterranean diet and reduced the incidence of gestational diabetes.
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
A plain-language read of the study’s main message and where it applies.
Study focus
A nutritionist-guided video intervention improved adherence to the Mediterranean diet and reduced the incidence of gestational diabetes.
Gestational diabetes can lead to serious health issues for both mothers and babies. By improving adherence to a healthy diet, this intervention may help reduce the incidence of gestational diabetes, potentially leading to better health outcomes for mothers and their children.
The study's sample size may limit generalizability. Potential confounding factors were not fully controlled. The long-term effects of the intervention were not assessed.
Published in
Publication details and source links for this paper.
Rocío M, Ana MR, Ricardo S, et al. Nutritionist-Guided Video Intervention Improves Adherence to Mediterranean Diet and Reduces Gestational Diabetes Incidence. Nutrients. 2025;17(22):3533. doi:10.3390/nu17223533
Gestational diabetes incidence decreased from 25.1% to 20.7% (p = 0.025).
Pregnancy-induced hypertension rates were lower at 2.6% compared to 5.6% (p = 0.004).
Episiotomy rates reduced from 19.0% to 14.4% (p = 0.015).
Evidence network
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This study contributes evidence to Mediterranean diet and Adherence to Mediterranean diet measured using MEDAS-14, Gestational diabetes mellitus incidence, Incidence of Episiotomy During Delivery, and 2 more.
This study contributes evidence to
Primary intervention
Mediterranean diet
Primary outcomes
Evidence topics
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.
1
Related topics
5
Evidence pairs
38
Related studies
Evidence topic
Contributes evidence
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Primary evidence
Evidence topic
matched_outcome
Core evidence
The primary outcomes reported in this study.
Mediterranean diet → Adherence to Mediterranean diet measured using MEDAS-14
Mediterranean diet → Adherence to Mediterranean diet measured using MEDAS-14
Mediterranean diet → Gestational diabetes mellitus incidence
Mediterranean diet → Gestational diabetes mellitus incidence
Mediterranean diet → Incidence of Episiotomy During Delivery
Mediterranean diet → Incidence of Episiotomy During Delivery
Mediterranean diet → Incidence of pregnancy-induced hypertension during pregnancy
Mediterranean diet → Incidence of pregnancy-induced hypertension during pregnancy
Mediterranean diet → Number of NICU admissions
Mediterranean diet → Number of NICU admissions
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Explore related studies, evidence collections, and research questions.
Relationships organized using the Dediabetes Evidence Intelligence™ framework.
This study contributes to evidence on Mediterranean diet and Diabetes Incidence and Prevention, Mediterranean diet and Adherence to Mediterranean diet measured using MEDAS-14.
This study contributes to the evidence on the following intervention-outcome relationships.
Diet and Nutrition
Curated evidence collections and hubs this study is part of.
All studies measuring Diabetes Incidence and Prevention
Measures Diabetes Incidence and Prevention as a key outcome.
All studies on Mediterranean diet
Contributes to Mediterranean diet evidence base.
All studies measuring Adherence to Mediterranean diet measured using MEDAS-14
Measures Adherence to Mediterranean diet measured using MEDAS-14 as a key outcome.
Latest published studies
Published within the last 2 years.
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3 results
2 results
3 results
3 results
2 results
Generated from the study's connected evidence using Evidence Intelligence™.
Mediterranean diet appears to reduce gestational diabetes mellitus incidence.
ConsistencyScore™: Results are consistent across studies.
Ranked evidence signals
Gestational diabetes mellitus incidence
EvidenceScore™ Strong | EvidenceScore™ 79.0 | strong positive | ConsistencyScore™ Consistent | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
Mediterranean diet appears to improve adherence to mediterranean diet measured using medas-14.
ConsistencyScore™: Results are consistent across studies.
Ranked evidence signals
Adherence to Mediterranean diet measured using MEDAS-14
EvidenceScore™ Moderate | EvidenceScore™ 69.0 | strong positive | ConsistencyScore™ Consistent | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
Mediterranean diet appears to reduce incidence of episiotomy during delivery.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
Incidence of Episiotomy During Delivery
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
Mediterranean diet appears to reduce incidence of pregnancy-induced hypertension during pregnancy.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
Incidence of pregnancy-induced hypertension during pregnancy
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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