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Updated: May 1, 2026

Manipulation of Rhythmic Food Intake in Mice Using a Custom-Made Feeding System
Published on: December 16, 2022
Distinct meal timing and frequency patterns contribute to daily glycemic variability
Dong-Hwa Jeong1,2, YoonJu Song3
1Department of Artificial Intelligence, The Catholic University of Korea, Bucheon-si, South Korea.
Meal timing and distribution, not just nutrient intake, significantly impact glycemic variability in young adults. Later breakfasts and more dinner calories correlate with higher glucose fluctuations, suggesting a shift in dietary recommendations.
Area of Science:
- Metabolic Health
- Nutritional Science
- Endocrinology
Background:
- Glycemic variability is a key indicator of metabolic health.
- Behavioral factors influencing glycemic variability in healthy individuals are not well understood.
Purpose of the Study:
- To examine the association between meal patterns (timing, distribution, frequency) and glycemic variability.
- To identify behavioral determinants of metabolic health in young adults.
Main Methods:
- Continuous glucose monitoring in 96 individuals (18-27 years) for 14 days.
- Clustering of daily glucose profiles using dynamic time warping.
- Analysis of meal and sleep logs to characterize dietary patterns.
Main Results:
- Two distinct glycemic profile clusters were identified, with Cluster 2 showing significantly greater variability (17.7% vs. 14.1%).
- Cluster 2 had lower total energy intake but later breakfast timing, fewer eating occasions, and a higher proportion of energy consumed at dinner.
- No significant differences in macronutrient composition were observed between clusters.
Conclusions:
- Meal timing and distribution are significant behavioral determinants of glycemic variability.
- Dietary recommendations should incorporate meal patterns alongside nutrient composition for metabolic health management.
- This study highlights a shift towards a more holistic approach in nutritional guidance.
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