Yihong Zhao PhD , Xuewei Han MS , Sarah W. Feldstein Ewing PhD , Marie-Pierre St-Onge PhD , Martin P. Paulus MD
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引用次数: 0
Abstract
Objectives
Emerging evidence suggests a role of diet in sleep disturbances and mental health including internalizing (e.g., anxiety, depression) and externalizing (e.g., aggression, impulsivity) problems.
Methods
This study employed a data-driven approach to construct a Sleep-Mental Health-Eating Index and assessed its mediating roles in the relationships between difficulties initiating and maintaining sleep and mental health problems in 11,000 youth aged 9-10 years. Difficulties initiating and maintaining sleep and mental health problems were assessed annually from baseline to Year2, and diet at Year1. The Shapley Additive Explanations analysis was used to derive the eating index.
Results
Six dietary categories emerged as important predictors of our outcomes, with whole grains, green vegetables, and berries linked to lower difficulties initiating and maintaining sleep scores, while sweet pastries, fast food, and butter cream linked to higher difficulties initiating and maintaining sleep. Dietary factors explained 2.24% of difficulties initiating and maintaining sleep variation, surpassing demographics (1.21%). For internalizing behaviors, dietary and demographic contributions were similar (1.86% vs. 1.98%). Demographics were the strongest predictors of externalizing symptoms (3.84%). Higher baseline difficulties initiating and maintaining sleep (beta = −0.026, 95% CI: −0.038, −0.015) and internalizing scores (beta = −0.027, 95% CI: −0.035, −0.019) were associated with worse eating index at Year1. Additionally, the eating index mediated relationships between baseline difficulties initiating and maintaining sleep/internalizing problems and Year2 outcomes. Overall, indirect effects range from 3.2% to 7.0%.
Conclusions
These findings highlight diet’s role in predicting and mediating sleep and mental health outcomes. Healthy foods were associated with fewer sleep difficulties and internalizing problems, while unhealthy foods worsen sleep and behavior problems. Targeting diet may improve interventions addressing adolescent sleep and mental health challenges.
期刊介绍:
Sleep Health Journal of the National Sleep Foundation is a multidisciplinary journal that explores sleep''s role in population health and elucidates the social science perspective on sleep and health. Aligned with the National Sleep Foundation''s global authoritative, evidence-based voice for sleep health, the journal serves as the foremost publication for manuscripts that advance the sleep health of all members of society.The scope of the journal extends across diverse sleep-related fields, including anthropology, education, health services research, human development, international health, law, mental health, nursing, nutrition, psychology, public health, public policy, fatigue management, transportation, social work, and sociology. The journal welcomes original research articles, review articles, brief reports, special articles, letters to the editor, editorials, and commentaries.