Research Summary
Analyzed using Evidence Intelligence™

Low-Carbohydrate Diet May Affect Bone Health in Young Adults with Diabetes

Last updated August 22, 2026

Key finding

The median-adjusted alkaline phosphatase level decreased significantly in the LC group (p = 0.009).

This study examined the effects of low-carbohydrate and Mediterranean diets on bone turnover markers in adolescents and young adults with type 1 diabetes, finding significant changes in alkaline phosphatase levels.

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 examined the effects of low-carbohydrate and Mediterranean diets on bone turnover markers in adolescents and young adults with type 1 diabetes, finding significant changes in alkaline phosphatase levels.

Clinical relevance

Understanding how different diets affect bone health is crucial for managing type 1 diabetes in young individuals. Since bone health is vital for overall well-being and future risk of fractures, these findings can help guide dietary recommendations for this population.

Keep in mind

The sample size may limit the generalizability of the findings. Short duration of the study may not capture long-term effects. Potential confounding factors were not fully controlled.

Published in

Journal Reference

Publication details and source links for this paper.

Neriya L, Noah L, Yael L, et al. Effects of Low-Carbohydrate and Mediterranean Diets on Bone Turnover Markers in Adolescents and Young Adults with Type 1 Diabetes. Nutrients. 2025;17(24):3935. doi:10.3390/nu17243935

Main Effects

The median CTX level changed from 395 pg/mL to 423 pg/mL in the low-carbohydrate group (p = 0.278).

P1NP levels decreased from 95 ng/mL to 88 ng/mL in the low-carbohydrate group (p = 0.056).

Alkaline phosphatase levels significantly decreased by 9.5 IU/L in the low-carbohydrate group (p = 0.009).

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, Mediterranean diet and C-terminal telopeptide (CTX) levels, Risk of alkaline phosphatase abnormalities after treatment, Serum P1NP.

Primary intervention

Low-carbohydrate diet

Primary outcomes

  • C-terminal telopeptide (CTX) levels
  • Risk of alkaline phosphatase abnormalities after treatment
  • Serum P1NP

Evidence relationships

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

6
Evidence pairs
6
Relationships
0
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: 54

0

Related topics

6

Evidence pairs

0

Related studies

Why it is useful

  • Contributes to 6 evidence relationships
  • Includes primary outcome data
  • Linked to 0 direct semantic evidence topics

Core evidence

Study findings

The primary outcomes reported in this study.

C-terminal telopeptide (CTX) levels

Low-carbohydrate diet → C-terminal telopeptide (CTX) levels

Low-carbohydrate diet → C-terminal telopeptide (CTX) levels

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 Tracker

Risk of alkaline phosphatase abnormalities after treatment

Low-carbohydrate diet → Risk of alkaline phosphatase abnormalities after treatment

Low-carbohydrate diet → Risk of alkaline phosphatase abnormalities after treatment

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 Tracker

Serum P1NP

Low-carbohydrate diet → Serum P1NP

Low-carbohydrate diet → Serum P1NP

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 Tracker

C-terminal telopeptide (CTX) levels

Mediterranean diet → C-terminal telopeptide (CTX) levels

Mediterranean diet → C-terminal telopeptide (CTX) levels

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 Tracker

Risk of alkaline phosphatase abnormalities after treatment

Mediterranean diet → Risk of alkaline phosphatase abnormalities after treatment

Mediterranean diet → Risk of alkaline phosphatase abnormalities after treatment

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 Tracker

Serum P1NP

Mediterranean diet → Serum P1NP

Mediterranean diet → Serum P1NP

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 Tracker

Evidence Library

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evidence suggest

Evidence Suggest

  • Alkaline phosphatase levels decreased significantly in the low-carbohydrate diet group (p = 0.009).
  • No significant changes in CTX and P1NP levels were observed in either diet group.
  • Effectiveness of the Mediterranean diet on bone turnover markers remains unclear.
who this applies

Who this applies to

  • Adolescents and young adults aged 12-25 with type 1 diabetes.
  • Individuals seeking dietary interventions to manage diabetes.
keep in mind

Keep in Mind

  • Results may not be applicable to other age groups or diabetes types.
  • Further research is needed to confirm long-term effects of dietary changes.
  • Variability in individual responses to diets should be considered.
between the lines

Between the Lines

  • The sample size may limit the generalizability of the findings.
  • Short duration of the study may not capture 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 Low-Carbohydrate Diet Education and Risk of alkaline phosphatase abnormalities after treatment, Low-Carbohydrate Diet Education and C-terminal telopeptide (CTX) levels.

Related evidence relationships

Explore in Evidence Explorer

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

Included in these evidence collections

Curated evidence collections and hubs this study is part of.

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Questions answered by this study

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

Does Low-carbohydrate diet reduce risk of alkaline phosphatase abnormalities after treatment?

Emerging Evidence

Low-carbohydrate diet appears to reduce risk of alkaline phosphatase abnormalities after treatment.

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

Ranked evidence signals

  1. 1

    Risk of alkaline phosphatase abnormalities after treatment

    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.
1 supporting study

Does Low-carbohydrate diet improve c-terminal telopeptide (CTX) levels?

Emerging Evidence

Current evidence does not show a clear benefit of Low-carbohydrate diet for c-terminal telopeptide (CTX) levels.

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

Ranked evidence signals

  1. 1

    C-terminal telopeptide (CTX) levels

    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.
1 supporting study

Does Low-carbohydrate diet improve serum p1np?

Emerging Evidence

Current evidence does not show a clear benefit of Low-carbohydrate diet for serum p1np.

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

Ranked evidence signals

  1. 1

    Serum P1NP

    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.
1 supporting study

Does Mediterranean diet improve c-terminal telopeptide (CTX) levels?

Emerging Evidence

Current evidence does not show a clear benefit of Mediterranean diet for c-terminal telopeptide (CTX) levels.

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

Ranked evidence signals

  1. 1

    C-terminal telopeptide (CTX) levels

    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.
1 supporting study
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