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The Study

Preliminary study: Evaluation of melatonin secretion in children and adolescents with type 1 diabetes mellitus

In simple terms

This study is like taking a single snapshot of two groups of kids to see if their melatonin levels are different. It can show that the levels are different at that exact moment, but it cannot tell us if the diabetes caused the lower levels, if the lower levels caused the diabetes, or if something else caused both.

35%

Analysis score

35/ 44

Maximum 44 for a cross-sectional study.

Where the score came from

Reporting0
Methodology26
Publication100
Statistical23
Study type (basis of the score)
Cross-Sectional Study
Level 4 - Case series
What’s the bottom line?

Researchers checked if kids with type 1 diabetes have different levels of melatonin (a sleep hormone) compared to healthy kids.

Where does this study sit?

Reviews of RCTs (Meta-analyses)

Max 100

Randomized Trials

Max 90

Reviews of Cohort Studies

Max 85

Cohort Studies

Max 72

Reviews of Case-Control Studies

Max 63

Case-Control Studies

Max 58

Cross-Sectional & Case Series

Max 50

Expert Opinion

Max 5
StrongerWeaker
Cross-Sectional & Case Series
Level 4
35

35 / 100

Quality score

Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.

Cannot establish causation

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Key takeaways

Summary

Based on the study abstract and findings.

  1. 1Yes, this significant drop suggests diabetes may disrupt natural hormone rhythms, which could affect sleep, inflammation, and blood sugar control.
  2. 2Kids with diabetes had about 41% less melatonin in the morning (6.75 pg/ml vs 11.51 pg/ml).

Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data

Publication

Journal

Indian Journal of Endocrinology and Metabolism

Year

2014

Authors

Y. Kor, I. Geyikli, M. Keskin, M. Akan

Open Access
21 citations
Analysis v5
Fit Body Science verdict — we translate health studies into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.