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This research aims to investigate the relationship between nighttime sleep duration, depression, and digestive diseases in older adults in China.

April 8, 2026BMC Public HealthOpen Access

The association between nighttime sleep duration and digestive diseases in middle-aged and older population in China: mediating role of depression

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Analysis reveals that short sleep duration increases digestive disease odds in older adults, highlighting depression's mediating role.

This research aims to investigate the relationship between nighttime sleep duration, depression, and digestive diseases in older adults in China.
Utilized the 2018 CHARLS dataset for analysis
Employed binary logistic regression and Spearman correlation analysis
Conducted mediation effect analysis based on Baron and Kenny’s approach and KHB method
Performed subgroup analyses to examine variations based on health conditions
Short sleep (< 6 h) is linked to significantly higher odds of digestive diseases (OR = 1.409)
Odds of digestive diseases are lowest at approximately 7.8 h of sleep
Depression accounts for 20.98% of the association between sleep duration and digestive diseases
Longer sleep does not correlate with lower odds of digestive diseases in those with hypertension, diabetes, or depression

Ming et al. (2026) studied this question.

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