Interaction between chronotype and ultra-processed food intake on triglyceride-glucose index in Korean adults

Aug 14, 2025Nutrition research and practice

How Sleep Timing and Processed Food Intake Together Relate to Blood Sugar and Fat Levels in Korean Adults

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Abstract

A significant interaction between intake and was observed in the evening-type group (p = 0.043).

  • values were significantly higher in the evening-type group for the third and fourth quartiles of UPF intake compared to the first quartile (p = 0.005).
  • The TyG index varied significantly across different chronotypes and UPF intake quartiles (p = 0.005 and p = 0.046, respectively).
  • The odds of diabetes increased across TyG quartiles, with odds ratios of 3.52 for the third quartile and 5.41 for the fourth quartile compared to the first quartile.

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Key numbers

3.52
Odds Ratio for Diabetes (Q3)
Comparison of diabetes odds across quartiles.
5.41
Odds Ratio for Diabetes (Q4)
Comparison of diabetes odds across quartiles.
0.005
Index Quartile Variation
Statistical significance of index variation.

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