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Association between Selenium Intake and Optimal Sleep Duration: A National Longitudinal Study
Lingxi Zhao1,2,3, Shengping Li1,2,3, Yuzhao Zhu1,2,3
1School of Public Health, Chongqing Medical University, Chongqing 400016, China.
Nutrients
|January 21, 2023
Summary
Dietary selenium intake shows a significant association with optimal sleep duration. Higher selenium consumption was linked to better sleep, particularly in overweight individuals, suggesting a potential role for selenium in sleep health.
Area of Science:
- Nutrition Science
- Sleep Medicine
- Public Health
Background:
- Studies on dietary selenium (Se) and sleep have yielded inconsistent findings.
- Optimal sleep duration is crucial for overall health and well-being.
Purpose of the Study:
- To investigate the association between dietary selenium intake and optimal sleep duration in a large adult population.
- To explore potential differences in this association based on body weight.
Main Methods:
- Utilized data from 17,176 adults (≥20 years) from the China Health and Nutrition Survey (CHNS) spanning 2004-2011.
- Assessed sleep duration via face-to-face interviews and dietary selenium consumption using a 3-day, 24-hour recall.
- Employed multilevel mixed-effects logistic regression for data analysis, including subgroup analysis for overweight individuals.
Main Results:
- A significant positive association was observed between selenium intake and optimal sleep duration (7-9 hours/day).
- Odds ratios for optimal sleep duration increased with higher tertiles of selenium consumption (OR=1.19 for the highest tertile).
- A substantial positive connection between selenium intake and optimal sleep duration was evident specifically in overweight participants.
Conclusions:
- Dietary selenium intake is significantly associated with achieving optimal sleep duration.
- Selenium may play a role in promoting better sleep, with a more pronounced effect noted in overweight individuals.
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