Circadian Preference, Sleep Quality, and Health-impairing Lifestyles Among Undergraduates of Medical University

In a study of 203 medical students, evening chronotype individuals exhibited poor sleep quality more frequently than their morning and intermediate counterparts.

• Evening chronotype is associated with higher rates of poor sleep quality compared to other chronotypes.
• A significant positive correlation exists between poor sleep quality and factors such as sex, tobacco smoking, alcohol consumption, diet type, and dinner timing for evening chronotype individuals.
• Health-impairing lifestyles may negatively impact sleep quality, particularly in those with an evening chronotype.
• The findings suggest that aligning daily activities with individual chronotypes could enhance both academic performance and overall quality of life.

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