How sleep timing and social jetlag relate to following Japanese diet guidelines in workers

Greater social jetlag is associated with a lower adherence score to the Japanese Food Guide Spinning Top (JFGST).

• Social jetlag was defined as the difference in sleep midpoint between weekdays and weekends.
• The multivariable-adjusted mean JFGST scores decreased as social jetlag increased, with scores of 39.7, 38.7, and 38.1 for less than 1 hour, 1 to less than 2 hours, and 2 hours or more, respectively.
• Workers with late chronotypes showed significantly lower adherence scores on the JFGST, with a mean score of 36.3.
• These findings suggest an inverse relationship between social jetlag, late chronotype, and dietary adherence among Japanese workers.

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