Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 100
- Very Positive
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence TrackerResearch Summary
Analyzed using Evidence Intelligence™
Pre-meal whey protein improves glycemic control in type 2 diabetes.
Last updated September 1, 2026
Key finding
PPG iAUC was reduced by WP (−16%, P < .05).
This study investigated the effects of pre-meal whey protein on postprandial glycemia in adults with type 2 diabetes, finding significant reductions in glycemia and improvements in beta-cell function.
Quick read
Study at a glance
The essential study design details in one scan.
EvidenceScore™
Moderate
Study type
RCTs
Follow-up
Medium-Term (3–12 mo)
Risk of bias
Some Concerns
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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 investigated the effects of pre-meal whey protein on postprandial glycemia in adults with type 2 diabetes, finding significant reductions in glycemia and improvements in beta-cell function.
Clinical relevance
These findings suggest that incorporating whey protein into meals may be a beneficial strategy for managing blood sugar levels in individuals with type 2 diabetes. This could lead to improved dietary recommendations and better overall glycemic control, potentially reducing the risk of diabetes-related complications.
Keep in mind
The study's sample size and demographic diversity may limit generalizability. Short duration of the intervention may not reflect long-term effects. Potential confounding factors were not fully controlled.
Published in
Journal Reference
Publication details and source links for this paper.
Kieran S, Guy ST, Mark W, et al. Pre-meal whey protein reduces postprandial glycemia in adults with type 2 diabetes. The Journal of Clinical Endocrinology and Metabolism. 2023;108(8):e603-e612. doi:10.1210/clinem/dgad069
Main Effects
Postprandial glycemia was reduced by 16% after whey protein (P < .05).
Beta-cell function improved by 40% after whey protein (P = .001).
Insulin clearance decreased by 22% after whey protein (P < .0001).
Evidence network
How this study fits
Understand where this research contributes within the broader evidence network.
Evidence Context
This study contributes evidence to Whey protein and Beta-cell function, GLP-1 iAUC, Glucagon, and 2 more.
This study contributes evidence to
Primary intervention
Whey protein
Primary outcomes
- Beta-cell function
- GLP-1 iAUC
- Glucagon
Evidence topics
Primary intervention
Primary outcomes
Evidence relationships
Intervention and outcome relationships this study adds to the evidence network.
5
Evidence pairs
5
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: 59
1
Related topics
5
Evidence pairs
27
Related studies
High relevance in at least one topic
Why it is useful
- Contributes to 5 evidence relationships
- Includes primary outcome data
- Linked to 1 direct semantic evidence topic
Topic contributions
Evidence topic
Contributes evidence
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Primary evidence
Evidence topic
Beta-Cell Function
matched_outcome
Core evidence
Study findings
The primary outcomes reported in this study.
Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 100
- Very Positive
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence TrackerEvidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 100
- Very Positive
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence TrackerGlycemic control comparison to commercial AID systems
Whey protein → Glycemic control comparison to commercial AID systems
Whey protein → Glycemic control comparison to commercial AID systems
Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 100
- Very Positive
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence TrackerEvidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 100
- Very Positive
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence TrackerEvidence Library
Build your evidence library
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Evidence Suggest
- Whey protein reduced postprandial glycemia by 16%.
- Beta-cell function increased by 40% after whey protein.
- Insulin clearance decreased significantly after whey protein.
Who this applies to
- Adults diagnosed with type 2 diabetes.
- Individuals seeking dietary interventions to manage blood sugar.
Keep in Mind
- Results may not apply to all populations with diabetes.
- Further research is needed to confirm long-term effects.
- The study did not assess the impact of whey protein on weight or other metabolic parameters.
Between the Lines
- The study's sample size and demographic diversity may limit generalizability.
- Short duration of the intervention may not reflect long-term effects.
- Potential confounding factors were not fully controlled.
Evidence Library
Build your evidence library
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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 Whey protein and Beta-cell Function, Whey protein and GLP-1 iAUC.
Related evidence relationships
Explore in Evidence ExplorerThis study contributes to the evidence on the following intervention-outcome relationships.
Diet and Nutrition
Whey protein → Beta-cell Function
Diet and Nutrition
Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 100
- Very Positive
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
View evidenceDiet and Nutrition
Whey protein → GLP-1 iAUC
Diet and Nutrition
Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 100
- Very Positive
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
View evidenceIncluded in these evidence collections
Curated evidence collections and hubs this study is part of.
Beta-cell Function Evidence Hub
All studies measuring Beta-cell Function
1 studies
outcome_hubMeasures Beta-cell Function as a key outcome.
GLP-1 iAUC Evidence Hub
All studies measuring GLP-1 iAUC
1 studies
outcome_hubMeasures GLP-1 iAUC as a key outcome.
Whey protein Evidence Hub
All studies on Whey protein
1 studies
intervention_hubContributes to Whey protein evidence base.
Explore more in Evidence Explorer
Jump to pre-filtered views in Evidence Explorer.
All studies on Whey protein and Beta-cell function
Intervention: Whey proteinOutcome: Beta-cell function
1 results
All studies on Whey protein and GLP-1 iAUC
Intervention: Whey proteinOutcome: GLP-1 iAUC
1 results
All studies on Whey protein
Intervention: Whey protein
1 results
All studies measuring Beta-cell function
Outcome: Beta-cell function
1 results
All studies measuring GLP-1 iAUC
Outcome: GLP-1 iAUC
1 results
Questions answered by this study
Generated from the study's connected evidence using Evidence Intelligence™.
Does Whey protein improve beta-cell function?
Emerging Evidence
Whey protein appears to improve beta-cell function.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
Beta-cell function
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
Does Whey protein improve glp-1 iauc?
Emerging Evidence
Whey protein appears to improve glp-1 iauc.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
GLP-1 iAUC
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
Does Whey protein improve glucagon?
Emerging Evidence
Whey protein appears to improve glucagon.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
Glucagon
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
Does Whey protein improve glycemic control comparison to commercial aid systems?
Emerging Evidence
Whey protein appears to improve glycemic control comparison to commercial aid systems.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
Glycemic control comparison to commercial AID systems
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
Next steps
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