Evidence Intelligence™
- EvidenceScore™
- 86
- Strong
- ImpactScore™
- 82
- Positive
- ConsistencyScore™
- 82
- consistent
Supporting studies: Based on 11 studies
Add to Evidence TrackerResearch Summary
Analyzed using Evidence Intelligence™
Identifying metabolic subtypes improves diabetes prevention strategies
Last updated August 25, 2026
Key finding
The HR for diabetes development was significantly lower in Cluster 2 under lifestyle intervention (adjusted HR 0.40, 95% CI 0.17–0.95, P < 0.05).
This study explored metabolic subtypes in Japanese adults with prediabetes and found that intensive lifestyle intervention significantly reduced the risk of developing type 2 diabetes.
Quick read
Study at a glance
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
What this paper says
A plain-language read of the study’s main message and where it applies.
Study focus
This study explored metabolic subtypes in Japanese adults with prediabetes and found that intensive lifestyle intervention significantly reduced the risk of developing type 2 diabetes.
Clinical relevance
These findings highlight the importance of targeted lifestyle interventions for individuals with prediabetes, as they can significantly lower the risk of progressing to type 2 diabetes. This is crucial for public health, especially in populations at high risk, as effective prevention strategies can reduce the burden of diabetes-related complications.
Keep in mind
The study's generalizability may be limited to the Japanese population. Effectiveness of interventions may vary based on individual adherence. Long-term effects of lifestyle changes were not assessed.
Published in
Journal Reference
Publication details and source links for this paper.
Naoki S, Kaoru T, Akiko S, Masayuki D, Kazuyo T, Hideshi K. Unsupervised clustering identifies distinct metabolic subtypes among Japanese adults with prediabetes. Journal of Diabetes Investigation. 2026;17(6):961-969. doi:10.1111/jdi.70302
Main Effects
Intensive lifestyle intervention reduced the risk of incident type 2 diabetes (adjusted HR 0.40, P < 0.05).
HbA1c levels were significantly lower in the intervention group.
Insulin resistance (HOMA-IR) was significantly reduced in the intervention group.
Participants achieved a 5% reduction in body weight.
Evidence network
How this study fits
Understand where this research contributes within the broader evidence network.
Evidence Context
This study contributes evidence to Lifestyle intervention for prediabetes, Usual care and HbA1c, Insulin resistance, Type 2 diabetes incidence, and 1 more.
This study contributes evidence to
Primary intervention
Lifestyle intervention for prediabetes
Primary outcomes
- HbA1c
- Insulin resistance
- Type 2 diabetes incidence
Evidence topics
Primary intervention
Primary outcomes
Evidence relationships
Intervention and outcome relationships this study adds to the evidence network.
5
Evidence pairs
5
Relationships
2
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: 69
2
Related topics
5
Evidence pairs
680
Related studies
High relevance in at least one topic
Why it is useful
- Contributes to 5 evidence relationships
- Includes primary outcome data
- Linked to 2 direct semantic evidence topics
Topic contributions
Evidence topic
Contributes evidence
Evidence topic
Contributes evidence
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Primary evidence
Evidence topic
Prediabetes
matched_intervention_and_outcome
Related evidence
Evidence topic
HbA1c Reduction
Save evidence
Core evidence
Study findings
The primary outcomes reported in this study.
Insulin resistance
Lifestyle intervention for prediabetes → Insulin resistance
Lifestyle intervention for prediabetes → Insulin resistance
Evidence Intelligence™
- EvidenceScore™
- Moderate
- Score 69 · Based on 2 studies
- ImpactScore™
- 75
- Positive
- ConsistencyScore™
- 100
- consistent
Supporting studies: Based on 2 studies
Add to Evidence TrackerType 2 diabetes incidence
Lifestyle intervention for prediabetes → Type 2 diabetes incidence
Lifestyle intervention for prediabetes → Type 2 diabetes incidence
Evidence Intelligence™
- EvidenceScore™
- Strong
- Score 79 · Based on 4 studies
- ImpactScore™
- 75
- Positive
- ConsistencyScore™
- 75
- consistent
Supporting studies: Based on 4 studies
Add to Evidence TrackerWeight loss dependent effect on HbA1c
Lifestyle intervention for prediabetes → Weight loss dependent effect on HbA1c
Lifestyle intervention for prediabetes → Weight loss dependent effect on HbA1c
Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 50
- Neutral
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence TrackerType 2 diabetes incidence
Usual care → Type 2 diabetes incidence
Usual care → Type 2 diabetes incidence
Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 50
- Neutral
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence TrackerEvidence Library
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Evidence Suggest
- Intensive lifestyle intervention led to a 60% reduction in diabetes risk.
- HbA1c levels decreased significantly in the intervention group.
- Participants lost an average of 5 kg during the study.
Who this applies to
- Japanese adults aged 30-65 with prediabetes.
- Individuals at high risk for developing type 2 diabetes.
Keep in Mind
- Results may not apply to populations outside Japan.
- The study focused on short-term outcomes; long-term benefits are unknown.
- Variability in individual responses to lifestyle interventions should be considered.
Between the Lines
- The study's generalizability may be limited to the Japanese population.
- Effectiveness of interventions may vary based on individual adherence.
- Long-term effects of lifestyle changes were not assessed.
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 Lifestyle intervention for prediabetes and HbA1c, Usual care and HbA1c.
Related evidence relationships
Explore in Evidence ExplorerThis study contributes to the evidence on the following intervention-outcome relationships.
Behavioral & Lifestyle
Lifestyle intervention for prediabetes → HbA1c
Behavioral & Lifestyle
Evidence Intelligence™
- EvidenceScore™
- 86
- Strong
- ImpactScore™
- 82
- Positive
- ConsistencyScore™
- 82
- consistent
Supporting studies: Based on 11 studies
View evidenceBehavioral & Lifestyle
Usual care → HbA1c
Behavioral & Lifestyle
Evidence Intelligence™
- EvidenceScore™
- 86
- Strong
- ImpactScore™
- 59
- Slightly Positive
- ConsistencyScore™
- 90
- consistent
Supporting studies: Based on 11 studies
View evidenceBehavioral & Lifestyle
Lifestyle intervention for prediabetes → Weight loss dependent effect on HbA1c
Behavioral & Lifestyle
Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 50
- Neutral
- 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.
HbA1c Evidence Hub
All studies measuring HbA1c
11 studies
outcome_hubMeasures HbA1c as a key outcome.
Lifestyle intervention for prediabetes Evidence Hub
All studies on Lifestyle intervention for prediabetes
11 studies
intervention_hubContributes to Lifestyle intervention for prediabetes evidence base.
Usual care Evidence Hub
All studies on Usual care
11 studies
intervention_hubContributes to Usual care evidence base.
Weight loss dependent effect on HbA1c Evidence Hub
All studies measuring Weight loss dependent effect on HbA1c
1 studies
outcome_hubMeasures Weight loss dependent effect on HbA1c as a key outcome.
Recent Diabetes Research
Latest published studies
recency_collection
Published within the last 2 years.
Explore more in Evidence Explorer
Jump to pre-filtered views in Evidence Explorer.
All studies on Lifestyle intervention for prediabetes and HbA1c
Intervention: Lifestyle intervention for prediabetesOutcome: HbA1c
11 results
All studies on Usual care and HbA1c
Intervention: Usual careOutcome: HbA1c
11 results
All studies on Lifestyle intervention for prediabetes
Intervention: Lifestyle intervention for prediabetes
11 results
All studies on Usual care
Intervention: Usual care
11 results
All studies measuring HbA1c
Outcome: HbA1c
11 results
Questions answered by this study
Generated from the study's connected evidence using Evidence Intelligence™.
Does Lifestyle intervention for prediabetes improve HbA1c?
Strong Evidence
Lifestyle intervention for prediabetes may improve HbA1c.
ConsistencyScore™: Results are consistent across studies.
Ranked evidence signals
- 1
HbA1c
EvidenceScore™ Strong | EvidenceScore™ 86.1 | moderate positive | ConsistencyScore™ Consistent | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
- Population details are unavailable.
Does Lifestyle intervention for prediabetes improve type 2 diabetes incidence?
Strong Evidence
Lifestyle intervention for prediabetes may improve Type 2 diabetes incidence.
ConsistencyScore™: Results are consistent across studies.
Ranked evidence signals
- 1
Type 2 diabetes incidence
EvidenceScore™ Strong | EvidenceScore™ 79.0 | moderate positive | ConsistencyScore™ Consistent | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
- Population details are unavailable.
Does Lifestyle intervention for prediabetes improve insulin resistance?
Moderate Evidence
Lifestyle intervention for prediabetes may improve Insulin resistance.
ConsistencyScore™: Results are consistent across studies.
Ranked evidence signals
- 1
Insulin resistance
EvidenceScore™ Moderate | EvidenceScore™ 69.0 | moderate positive | ConsistencyScore™ Consistent | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
- Population details are unavailable.
Does Lifestyle intervention for prediabetes affect weight loss dependent effect on hba1c?
Emerging Evidence
Current evidence does not show a clear benefit of Lifestyle intervention for prediabetes for Weight loss dependent effect on HbA1c.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
Weight loss dependent effect on HbA1c
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | neutral | ConsistencyScore™ 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.
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