Research Summary

Analyzed using Evidence Intelligence™

Low-Carbohydrate Diet Improves Glycemic Control in Adolescents with Type 1 Diabetes

Last updated August 21, 2026

Key finding

Carbohydrate intake decreased from 266 g (204; 316) to 87 g (68; 95) (p = 0.004).

Personalized low-carbohydrate diet regime in adolescents with type 1 diabetes.

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

Personalized low-carbohydrate diet regime in adolescents with type 1 diabetes.

Clinical relevance

This study evaluated Personalized low-carbohydrate diet regime in adolescents with type 1 diabetes.

Keep in mind

Limitations were not clearly described in the extracted text.

Published in

Journal Reference

Publication details and source links for this paper.

Neriya L, Noah L, Bruria S, et al. The Effect of a Personalized Low-Carbohydrate Diet on Nutritional Intake and Glycemic Control in Adolescents with Type 1 Diabetes: A Prospective Intervention Clinical Trial. Nutrients. 2023;15(6):1418. doi:10.3390/nu15061418

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Evidence network

How this study fits

Understand where this research contributes within the broader evidence network.

Evidence Context

This study contributes evidence to Low-carbohydrate diet and BMI z-score, Calcium intake, Carbohydrate intake, and 7 more.

This study contributes evidence to

Intervention

Low-carbohydrate diet

Outcome

BMI z-score

Evidence topic

Dietary Patterns

Primary intervention

Low-carbohydrate diet

Primary outcomes

BMI z-score
Calcium intake
Carbohydrate intake

Evidence topics

Dietary Patterns HbA1c Reduction Weight Loss

Primary intervention

Low-carbohydrate diet

Primary outcomes

BMI z-score Calcium intake Carbohydrate intake

Evidence relationships

Intervention and outcome relationships this study adds to the evidence network.

Evidence pairs

Relationships

Evidence topics

contributes_evidence

Editorial context

Why this study matters

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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.

Moderate contributionModerate confidenceNetwork score: 68

Why it is useful

Contributes to 10 evidence relationships
Includes primary outcome data
Linked to 3 direct semantic evidence topics

Topic contributions

Evidence topic

Contributes evidence

Evidence topic

Contributes evidence

Evidence topic

Contributes evidence

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Primary evidence

Evidence relationship

Low-Carbohydrate Diet Education and HbA1c

Related evidence

Evidence relationship

Low-Carbohydrate Diet Education and Body Composition

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Evidence topic

Dietary Patterns

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Core evidence

Study findings

The primary outcomes reported in this study.

BMI z-score

Low-carbohydrate diet → BMI z-score

Evidence Intelligence™

EvidenceScore™: Emerging; Score 59 · Based on 1 study
ImpactScore™: 100; Very Positive
ConsistencyScore™: unclear; Not enough independent studies

Based on 1 study

Add to Evidence Tracker

Calcium intake

Low-carbohydrate diet → Calcium intake

Evidence Intelligence™

EvidenceScore™: Emerging; Score 59 · Based on 1 study
ImpactScore™: 50; Neutral
ConsistencyScore™: unclear; Not enough independent studies

Based on 1 study

Add to Evidence Tracker

Fiber intake

Low-carbohydrate diet → Fiber intake

Evidence Intelligence™

EvidenceScore™: Emerging; Score 59 · Based on 1 study
ImpactScore™: 100; Very Positive
ConsistencyScore™: unclear; Not enough independent studies

Based on 1 study

Add to Evidence Tracker

Folate intake

Low-carbohydrate diet → Folate intake

Evidence Intelligence™

EvidenceScore™: Emerging; Score 59 · Based on 1 study
ImpactScore™: 50; Neutral
ConsistencyScore™: unclear; Not enough independent studies

Based on 1 study

Add to Evidence Tracker

HbA1c

Low-carbohydrate diet → HbA1c

Evidence Intelligence™

EvidenceScore™: 82; Strong
ImpactScore™: 86; Very Positive
ConsistencyScore™: 75; consistent

Based on 13 studies

Add to Evidence Tracker

Iron intake

Low-carbohydrate diet → Iron intake

Evidence Intelligence™

EvidenceScore™: Emerging; Score 59 · Based on 1 study
ImpactScore™: 50; Neutral
ConsistencyScore™: unclear; Not enough independent studies

Based on 1 study

Add to Evidence Tracker

Percentage contribution of ultra-processed foods to total energy intake

Low-carbohydrate diet → Percentage contribution of ultra-processed foods to total energy intake

Evidence Intelligence™

EvidenceScore™: Emerging; Score 59 · Based on 1 study
ImpactScore™: 25; Negative
ConsistencyScore™: unclear; Not enough independent studies

Based on 1 study

Add to Evidence Tracker

Vitamin B1 intake

Low-carbohydrate diet → Vitamin B1 intake

Evidence Intelligence™

EvidenceScore™: Emerging; Score 59 · Based on 1 study
ImpactScore™: 50; Neutral
ConsistencyScore™: unclear; Not enough independent studies

Based on 1 study

Add to Evidence Tracker

Waist circumference

Low-carbohydrate diet → Waist circumference

Evidence Intelligence™

EvidenceScore™: Strong; Score 79 · Based on 3 studies
ImpactScore™: 100; Very Positive
ConsistencyScore™: 100; consistent

Based on 3 studies

Add to Evidence Tracker

Carbohydrate intake

Low-carbohydrate diet → Carbohydrate intake

Evidence Intelligence™

EvidenceScore™: Emerging; Score 59 · Based on 1 study
ImpactScore™: 100; Very Positive
ConsistencyScore™: unclear; Not enough independent studies

Based on 1 study

Add to Evidence Tracker

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 Low-Carbohydrate Diet Education and HbA1c, Low-Carbohydrate Diet Education and Body Composition.

Related evidence relationships

Explore in Evidence Explorer

This study contributes to the evidence on the following intervention-outcome relationships.

Diet and Nutrition

Detailed evidence

Low-Carbohydrate Diet Education → HbA1c

Diet and Nutrition

Evidence Intelligence™

EvidenceScore™: 82; Strong
ImpactScore™: 86; Very Positive
ConsistencyScore™: 75; consistent

Based on 13 studies

View evidence

Diet and Nutrition

Detailed evidence

Low-Carbohydrate Diet Education → Body Composition

Diet and Nutrition

Evidence Intelligence™

EvidenceScore™: Strong; Score 79 · Based on 3 studies
ImpactScore™: 100; Very Positive
ConsistencyScore™: 100; consistent

Based on 3 studies

View evidence

Included in these evidence collections

Curated evidence collections and hubs this study is part of.

HbA1c Evidence Hub

All studies measuring HbA1c

13 studies

outcome_hub

Measures HbA1c as a key outcome.

Low-Carbohydrate Diet Education Evidence Hub

All studies on Low-Carbohydrate Diet Education

13 studies

intervention_hub

Contributes to Low-Carbohydrate Diet Education evidence base.

Body Composition Evidence Hub

All studies measuring Body Composition

3 studies

outcome_hub

Measures Body Composition as a key outcome.

Explore more in Evidence Explorer

Jump to pre-filtered views in Evidence Explorer.

All studies on Low-carbohydrate diet and HbA1c

Intervention: Low-carbohydrate dietOutcome: HbA1c

13 results

All studies on Low-carbohydrate diet and Waist circumference

Intervention: Low-carbohydrate dietOutcome: Waist circumference

3 results

All studies on Low-carbohydrate diet

Intervention: Low-carbohydrate diet

13 results

All studies measuring HbA1c

Outcome: HbA1c

13 results

All studies measuring Waist circumference

Outcome: Waist circumference

3 results

Questions answered by this study

Generated from the study's connected evidence using Evidence Intelligence™.

Does Low-Carbohydrate Diet Education improve HbA1c?

Strong Evidence

Low-Carbohydrate Diet Education appears to improve HbA1c.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

1
HbA1c
EvidenceScore™ Strong | EvidenceScore™ 82.0 | strong positive | ConsistencyScore™ Consistent | 1 study

Why this answer: This answer is based on 14 supporting studies with consistent results and a positive effect signal.

Limitations

Population details are unavailable.

View Full Evidence

Does Low-Carbohydrate Diet Education improve body composition?

Strong Evidence

Low-Carbohydrate Diet Education appears to improve Body Composition.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

1
Waist circumference
EvidenceScore™ Strong | EvidenceScore™ 79.0 | strong positive | ConsistencyScore™ Consistent | 1 study

Why this answer: This answer is based on 3 supporting studies with consistent results and a positive effect signal.

Limitations

Population details are unavailable.

View Full Evidence

Does Low-carbohydrate diet affect bmi z-score?

Emerging Evidence

Low-carbohydrate diet appears to improve BMI z-score.

ConsistencyScore™: Consistency cannot yet be determined from the available evidence.

Ranked evidence signals

1
BMI z-score
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.
Consistency cannot yet be determined.
Population details are unavailable.

View Full Evidence

Does Low-carbohydrate diet improve carbohydrate intake?

Emerging Evidence

Low-carbohydrate diet appears to improve Carbohydrate intake.

ConsistencyScore™: Consistency cannot yet be determined from the available evidence.

Ranked evidence signals

1
Carbohydrate intake
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.
Consistency cannot yet be determined.
Population details are unavailable.

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Next steps

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Evidence topics

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Dietary Patterns Evidence Hub HbA1c Reduction Evidence Hub Weight Loss Evidence Hub

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All studies on Low-carbohydrate diet and HbA1c All studies on Low-carbohydrate diet and Waist circumference All studies on Low-carbohydrate diet and BMI z-score All studies on Low-carbohydrate diet and Carbohydrate intake

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