Deficiency Serum Vitamin 25 (OH) D Levels Increase Risk Factors of Poor Quality Sleep in Resident at Sanglah Hospital

/aim: Serum vitamin D level, estimated as 25(OH) D, is related to an increase in number of physiological mechanisms of sleep. The circadian period of the sleep can be deferred with sun exposure and vitamin D supplementation. The mechanism of lower vitamin D level causing sleep disturbances is unknown, several possible mechanisms have been proposed. Receptors of vitamin D are commonly found in most human tissues, including central nervous system. Low level of vitamin D is related with an increased risk of sleep problems, such as low sleep quality, short sleep length and excessive drowsiness. This study aims toMethods: This study is an analytical study with a case-control design in resident st Sanglah Hospital from July-September 2021Result: A total of 54 subjects were divided into case and control groups, age 25-35 years. From the statistical analysis using SPSS program on bivariate analysis with Chi-square obtained OR 12.6 (95% Confidence Interval=3.4-46.0; p=<0,001). Multivariate analysis showed that cortisol serum had P-value <0,001Conclusion: Deficiency serum vitamin 25(OH) D levels increase risk factors of poor quality sleep thirteen times in resident at sanglah hospitalKeywords: poor sleep quality, resident, vitamin 25 (OH) D, young people.