NoneNo Change
BMI
Extra virgin olive oil supplementation → BMI
Extra virgin olive oil supplementation → BMI
Evidence profile
NoneNo ChangeWeight & Anthropometrics
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Research Summary
Analyzed using Evidence Intelligence™
EVOO supplementation reduces insulin needs and triglycerides in gestational diabetes
Key finding
Insulin required during the intervention was significantly reduced in the EVOO group (RR 0.595, 95% CI 0.361–0.967, p < 0.05).
This study evaluated the effects of extra virgin olive oil supplementation in women with gestational diabetes, finding significant reductions in insulin requirements and neonatal complications.
Evidence strength
Moderate confidence
Study type
RCTs
Follow-up
Short-Term (≤3 mo)
Some Concerns bias
Last updated July 8, 2026Quick read
Study at a glance
The essential study design details in one scan.
Population
Young Adult (19–39), Middle Aged (40-64), Female, Latin America (LATAM), with Gestational Diabetes
Intervention
Extra virgin olive oil supplementation
Study type
RCTs
Follow-up
Short-Term (≤3 mo)
Primary outcome
Insulin requirement during the intervention
Comparator
Standard care without EVOO
Plain-language summary
What this paper says
A plain-language read of the study's main message and where it applies.
Study focus
This study evaluated the effects of extra virgin olive oil supplementation in women with gestational diabetes, finding significant reductions in insulin requirements and neonatal complications.
Clinical relevance
These findings suggest that dietary interventions, such as extra virgin olive oil supplementation, could be beneficial in managing gestational diabetes, potentially improving maternal and neonatal outcomes. This could lead to more effective dietary recommendations for pregnant women at risk of diabetes.
Keep in mind
The study's sample size and generalizability may be limited. No significant changes were observed in gestational weight gain or maternal BMI. The long-term effects of EVOO supplementation were not assessed.
Published in
Journal Reference
Publication details and source links for this paper.
Alicia J, Silvia GDL, Magdalena R, et al. Dietary Supplementation with Extra Virgin Olive Oil in Women with Gestational Diabetes: A Multicenter Randomized Controlled Trial. Nutrients. 2026;18(7):1120. doi:10.3390/nu18071120
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Main Effects
Insulin requirement during the intervention was significantly reduced in the EVOO group (RR 0.595, p < 0.05).
Triglyceridemia significantly decreased in the EVOO-supplemented group (MD -43.3 mg/dL, p < 0.01).
The rate of neonates with more than one complication was significantly reduced in the EVOO group (RR 0.340, p < 0.05).
Evidence network
How this study fits
Understand where this research contributes within the broader evidence network.
Evidence Context
This study contributes evidence to Extra virgin olive oil supplementation and BMI, Gestational age at delivery (weeks), Gestational weight gain, and 4 more.
This study contributes evidence to
Primary intervention
Extra virgin olive oil supplementation
Primary outcomes
- BMI
- Gestational age at delivery (weeks)
- Gestational weight gain
Evidence topics
Primary intervention
Primary outcomes
Evidence relationships
Intervention and outcome relationships this study adds to the evidence network.
7
Evidence pairs
7
Relationships
1
Evidence topics
contributes_evidence
Editorial context
Why this study matters
See why this paper is useful beyond its individual results.
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.
Moderate contributionModerate confidenceNetwork score: 63
1
Related topics
7
Evidence pairs
88
Related studies
High relevance in at least one topic
Why it is useful
- Contributes to 7 evidence relationships
- Includes primary outcome data
- Linked to 1 direct semantic evidence topic
Topic contributions
Evidence topic
Contributes evidence
Core evidence
Study findings
The primary outcomes reported in this study.
NoneNo Change
Gestational age at delivery (weeks)
Extra virgin olive oil supplementation → Gestational age at delivery (weeks)
Extra virgin olive oil supplementation → Gestational age at delivery (weeks)
Evidence profile
NoneNo ChangeClinical Outcomes
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NoneNo Change
Gestational weight gain
Extra virgin olive oil supplementation → Gestational weight gain
Extra virgin olive oil supplementation → Gestational weight gain
Evidence profile
NoneNo ChangeWeight & Anthropometrics
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StrongDecrease
Insulin requirement during the intervention
Extra virgin olive oil supplementation → Insulin requirement during the intervention
Extra virgin olive oil supplementation → Insulin requirement during the intervention
Evidence profile
StrongDecreaseGlycemic Control
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StrongDecrease
NICU requirement percentage
Extra virgin olive oil supplementation → NICU requirement percentage
Extra virgin olive oil supplementation → NICU requirement percentage
Evidence profile
StrongDecreaseClinical Outcomes
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StrongDecrease
Rate of neonates with more than one complication
Extra virgin olive oil supplementation → Rate of neonates with more than one complication
Extra virgin olive oil supplementation → Rate of neonates with more than one complication
Evidence profile
StrongDecreaseClinical Outcomes
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StrongDecrease
Triglycerides
Extra virgin olive oil supplementation → Triglycerides
Extra virgin olive oil supplementation → Triglycerides
Evidence profile
StrongDecreaseMetabolic Health
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Evidence Suggest
- Insulin requirements decreased by 40.5% in the EVOO group.
- Triglyceride levels dropped by an average of 43.3 mg/dL.
- Neonatal complications were reduced by 66% in the EVOO group.
Who this applies to
- Women diagnosed with gestational diabetes.
- Pregnant women seeking dietary interventions for diabetes management.
Keep in Mind
- Results may not apply to all populations due to sample size constraints.
- Further research is needed to confirm long-term benefits of EVOO.
- The study did not measure all potential confounding factors.
Between the Lines
- The study's sample size and generalizability may be limited.
- No significant changes were observed in gestational weight gain or maternal BMI.
- The long-term effects of EVOO supplementation were not assessed.
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Connected Evidence
Explore related studies, evidence collections, and research questions.
Relationships organized using the Dediabetes Evidence Intelligence™ framework.
This study contributes to evidence on Extra virgin olive oil supplementation and Insulin requirement during the intervention, Extra virgin olive oil supplementation and Rate of neonates with more than one complication.
Related evidence relationships
Explore in Evidence ArchiveThis study contributes to the evidence on the following intervention-outcome relationships.
Extra virgin olive oil supplementationInsulin requirement during the intervention
Diet and Nutrition
1 studies
Detailed evidenceExtra virgin olive oil supplementationRate of neonates with more than one complication
Diet and Nutrition
1 studies
Detailed evidenceIncluded in these evidence collections
Curated evidence collections and hubs this study is part of.
Extra virgin olive oil supplementation Evidence Hub
All studies on Extra virgin olive oil supplementation
1 studies
intervention_hubContributes to Extra virgin olive oil supplementation evidence base.
Insulin requirement during the intervention Evidence Hub
All studies measuring Insulin requirement during the intervention
1 studies
outcome_hubMeasures Insulin requirement during the intervention as a key outcome.
Rate of neonates with more than one complication Evidence Hub
All studies measuring Rate of neonates with more than one complication
1 studies
outcome_hubMeasures Rate of neonates with more than one complication as a key outcome.
Recent Diabetes Research
Latest published studies
recency_collection
Published within the last 2 years.
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All studies on Extra virgin olive oil supplementation and Insulin requirement during the intervention
Intervention: Extra virgin olive oil supplementationOutcome: Insulin requirement during the intervention
1 results
All studies on Extra virgin olive oil supplementation and Rate of neonates with more than one complication
Intervention: Extra virgin olive oil supplementationOutcome: Rate of neonates with more than one complication
1 results
All studies on Extra virgin olive oil supplementation
Intervention: Extra virgin olive oil supplementation
1 results
All studies measuring Insulin requirement during the intervention
Outcome: Insulin requirement during the intervention
1 results
All studies measuring Rate of neonates with more than one complication
Outcome: Rate of neonates with more than one complication
1 results
Questions answered by this study
Generated from the study's connected evidence using Evidence Intelligence™.
Does Extra virgin olive oil supplementation improve insulin requirement during the intervention?
Emerging Evidence
Extra virgin olive oil supplementation appears to improve Insulin requirement during the intervention.
ConsensusScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
Insulin requirement during the intervention
EvidenceScore™ Emerging | EvidenceScore™ 50.5 | strong positive | ConsensusScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
- Consistency cannot yet be determined.
- Population details are unavailable.
Does Extra virgin olive oil supplementation improve nicu requirement percentage?
Emerging Evidence
Extra virgin olive oil supplementation appears to improve NICU requirement percentage.
ConsensusScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
NICU requirement percentage
EvidenceScore™ Emerging | EvidenceScore™ 50.5 | strong positive | ConsensusScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
- Consistency cannot yet be determined.
- Population details are unavailable.
Does Extra virgin olive oil supplementation improve rate of neonates with more than one complication?
Emerging Evidence
Extra virgin olive oil supplementation appears to improve Rate of neonates with more than one complication.
ConsensusScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
Rate of neonates with more than one complication
EvidenceScore™ Emerging | EvidenceScore™ 50.5 | strong positive | ConsensusScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
- Consistency cannot yet be determined.
- Population details are unavailable.
Does Extra virgin olive oil supplementation improve triglycerides?
Emerging Evidence
Extra virgin olive oil supplementation appears to improve Triglycerides.
ConsensusScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
Triglycerides
EvidenceScore™ Emerging | EvidenceScore™ 50.5 | strong positive | ConsensusScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
- Consistency cannot yet be determined.
- Population details are unavailable.
Next steps
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All studies on Extra virgin olive oil supplementation and Insulin requirement during the interventionAll studies on Extra virgin olive oil supplementation and TriglyceridesAll studies on Extra virgin olive oil supplementation and NICU requirement percentageAll studies on Extra virgin olive oil supplementation and Rate of neonates with more than one complication
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