Last updated August 21, 2026
Key finding
The 18-month mean change from baseline was statistically significant for 2-h glucose (−100.0 ± 57.7 vs −18.6 ± 86.2 mg/dL)
A study found that a 90 g/day low-carbohydrate diet significantly improved glycemic control in older patients with type 2 diabetes compared to a traditional diabetic diet.
Quick read
The essential study design details in one scan.
EvidenceScore™
Moderate
Study type
RCTs
Follow-up
Long-Term (1–5 y)
Risk of bias
Some Concerns
Save research, organize studies, and quickly find important evidence again.
Plain-language summary
A plain-language read of the study’s main message and where it applies.
Study focus
A study found that a 90 g/day low-carbohydrate diet significantly improved glycemic control in older patients with type 2 diabetes compared to a traditional diabetic diet.
Improving glycemic control is crucial for managing type 2 diabetes and reducing the risk of complications. The findings suggest that a low-carbohydrate diet may be a beneficial dietary approach for older adults, potentially leading to better health outcomes and improved quality of life.
The study's sample size and population may limit generalizability. The HbA1c results were not statistically significant. Potential confounding factors were not fully addressed.
Published in
Publication details and source links for this paper.
Yu‐Ting W, Chin‐Ying C, Wei‐Sheng H, et al. A 90 g/day low-carbohydrate diet improves glycemic control in older patients with type 2 diabetes. Journal of Diabetes Investigation. 2025;16(8):1398-1408. doi:10.1111/jdi.70083
Significant reduction in 2-hour plasma glucose by −100 mg/dL (p = 0.001)
Significant reduction in waist circumference by −6.3 cm (p = 0.001)
No significant change in HbA1c (−1.55%, p = 0.097)
Evidence network
Understand where this research contributes within the broader evidence network.
This study contributes evidence to Low-carbohydrate diet, Traditional diabetic diet (TDD) and 2-hour plasma glucose, HbA1c, Waist circumference.
This study contributes evidence to
Primary intervention
Low-carbohydrate diet
Primary outcomes
Primary intervention
Primary outcomes
Intervention and outcome relationships this study adds to the evidence network.
Editorial context
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.
6
Related topics
5
Evidence pairs
2152
Related studies
Evidence topic
Contributes evidence
Evidence topic
Contributes evidence
Evidence topic
Contributes evidence
Evidence topic
Contributes evidence
Save studies and evidence pages, organize your personal Evidence Tracker, and keep the research you care about in one place.
Primary evidence
Evidence relationship
Related evidence
Evidence relationship
Save evidence
Evidence relationship
Save evidence
Core evidence
The primary outcomes reported in this study.
Low-carbohydrate diet → 2-hour plasma glucose
Low-carbohydrate diet → 2-hour plasma glucose
Low-carbohydrate diet → Waist circumference
Low-carbohydrate diet → Waist circumference
Traditional diabetic diet (TDD) → 2-hour plasma glucose
Traditional diabetic diet (TDD) → 2-hour plasma glucose
Evidence Library
Save research, organize studies, and quickly find important evidence again.
Evidence Library
Save research, organize studies, and quickly find important evidence again.
Explore related studies, evidence collections, and research questions.
Relationships organized using the Dediabetes Evidence Intelligence™ framework.
This study contributes to evidence on Low-Carbohydrate Diet Education and HbA1c, Low-Carbohydrate Diet Education and Body Composition.
This study contributes to the evidence on the following intervention-outcome relationships.
Diet and Nutrition
Diet and Nutrition
Curated evidence collections and hubs this study is part of.
All studies measuring HbA1c
Measures HbA1c as a key outcome.
All studies on Low-Carbohydrate Diet Education
Contributes to Low-Carbohydrate Diet Education evidence base.
All studies measuring Body Composition
Measures Body Composition as a key outcome.
Latest published studies
Published within the last 2 years.
Jump to pre-filtered views in Evidence Explorer.
19 results
6 results
19 results
19 results
6 results
Generated from the study's connected evidence using Evidence Intelligence™.
Low-Carbohydrate Diet Education may lower HbA1c.
ConsistencyScore™: Results are generally consistent across studies.
Ranked evidence signals
HbA1c
EvidenceScore™ Strong | EvidenceScore™ 85.6 | moderate positive | ConsistencyScore™ Generally Consistent | 1 study
Why this answer: This answer is based on 22 supporting studies with generally consistent results and a positive effect signal.
Low-Carbohydrate Diet Education appears to improve body composition.
ConsistencyScore™: Results are consistent across studies.
Ranked evidence signals
Waist circumference
EvidenceScore™ Strong | EvidenceScore™ 84.2 | strong positive | ConsistencyScore™ Consistent | 1 study
Why this answer: This answer is based on 6 supporting studies with consistent results and a positive effect signal.
Low-Carbohydrate Diet Education appears to improve postprandial and ogtt glucose.
ConsistencyScore™: Results are consistent across studies.
Ranked evidence signals
2-hour plasma glucose
EvidenceScore™ Strong | EvidenceScore™ 79.0 | moderate positive | ConsistencyScore™ Generally Consistent | 1 study
Why this answer: This answer is based on 5 supporting studies with consistent results and a positive effect signal.
Traditional diabetic diet (TDD) appears to improve 2-hour plasma glucose.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
2-hour plasma glucose
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
Next steps
Choose a next path through related evidence topics, Evidence Explorer views, and research summaries.
Follow the topics this study contributes to.
Open broader Evidence Explorer views for this relationship.
Read related research summaries.
Focused on evidence, not advertising.
Your data is always protected.
New studies added every day.
