Background: This study aimed to investigate the dietary habit problems related to sleep duration by analyzing health behaviors and dietary habits in Korean adults. Methods: Adults aged ≥19 years who participated in the 2013-2015 Korea National Health and Nutrition Examination Survey were included in the study. Subjects were classified into the insufficient, appropriate, and excessive sleep groups. Subsequently, patient characteristics, health status, obesity and metabolic syndrome, dietary habits, and nutrient intake were analyzed. Results: The subjective health status was worse in the insufficient and excessive sleep groups than that in the appropriate sleep group. Body mass index and obesity and abdominal obesity rates were higher in the insufficient and excessive sleep groups than in the appropriate sleep group. The insufficient and excessive sleep groups had an irregular diet, and the excessive sleep group had significantly lower vitamin and mineral intake than insufficient and excessive sleep groups. Conclusions: Subjects in the insufficient and excessive sleep groups were less healthier than those in the appropriate sleep group. Further, subjects in the excessive sleep group had an unbalanced diet and nutritional status.

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