ArticleNutrients2025
Mental Health, Sleep, and Caffeine Intake Among Shift Workers in a Nationally Representative Sample of the Korean Adult Population.
Article in Nutrients, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- From caffeine use motives to sleep disturbance: network and structural equation modeling of caffeine use disorder and depression among caffeine consumers.Addictive behaviors reports · 2026Article
- Working against the clock: the impact of shift patterns on cognitive function, mental health, and stimulant use among healthcare workers.BMC psychiatry · 2026Article
- Influence of different doses of caffeine consumption on stress levels among students enrolled in King Khalid University, Saudi Arabia.Journal of family medicine and primary care · 2025Article
- Caffeine Intake Mediates the Relationship Between Problematic Overstudying and Psychological Distress.Nutrients · 2025Article
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12 authors.
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Abstract
backgroundCaffeine, a widely consumed stimulant, affects sleep and mental health. Shift work disrupts the circadian rhythm and has been associated with various mental health issues, such as depression, anxiety, and suicidal ideation.
objectiveThis study explored the associations between caffeine consumption, sleep duration, and mental health outcomes, particularly suicidal ideation, among shift workers in Korea.
methodsData from the 6th Korea National Health and Nutrition Examination Survey (2013, 2015), which comprised 4723 adults aged 19 and older, were analyzed. Participants were categorized into groups based on average daily coffee consumption and work patterns. Multiple logistic regression analyses were conducted to determine the impact of caffeine consumption and work patterns on mental health outcomes.
resultsParticipants worked longer hours, reported higher perceived stress levels, and slightly decreased sleep duration as daily coffee consumption increased. However, no significant differences were observed in depression or suicidal ideation across the coffee consumption groups. Logistic regression analysis indicated a trend towards higher suicidal ideation risk with increased coffee intake, particularly among those who consumed three or more cups per day (OR 5.67, 95% CI 1.82-17.59).
conclusionThis study suggests a complex relationship between caffeine consumption, work patterns, and mental health outcomes. Although caffeine intake is associated with increased work hours and stress, its impact on suicidal ideation is influenced by occupational factors.
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