Sleep duration increases with vitamin D levels in males, broad peak in females – Sept 2023

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The saturation effect of 25(OH)D level on sleep duration for older people:The NHANES 2011–2018

Geriatric Nursing Volume 53, September–October 2023, Pages 198-203 https://doi.org/10.1016/j.gerinurse.2023.07.008   PDF is behind a paywall
Ran Duan MSN a b 1, Tong Feng MD c d 1, JiXin Hou BSN b, Yu Wei BSN b, Lin Lin PhD e

This study aimed to investigate the potential relationship between vitamin D and sleep duration in older adults. The study utilized multivariate linear regression models to estimate the associations between serum 25(OH)D and sleep duration. In addition, a smooth curve fitting approach was used to identify any non-linear trends between the two variables. The study included 15,749 participants over the age of 60. The results showed a positive correlation between serum 25(OH)D levels and sleep duration in the fully-adjusted model. This correlation was observed in both males and females, as well as in non-Hispanic White and non-Hispanic Black participants. No significant interactions were found between serum 25(OH)D levels and the stratifying variables. The curve fitting analysis revealed a non-linear relationship between 25(OH)D and sleep duration, with a saturation point observed at a serum 25(OH)D level of 40.6 ng/mL. In conclusion, the findings suggest that there is a positive correlation between serum 25(OH)D levels and sleep duration, with a saturation effect observed. A positive correlation is evident when serum 25(OH)D falls below 40.6 ng/mL.

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VitaminDWiki – Sleep category contains

98 items in sleep category

A few items in SLEEP category

• Sleep greatly improved by 50,000 IU of vitamin D once every two weeks – RCT Sept 2018
• Sleeps disorders nicely treated by Vitamin D (50,000 IU twice a month) – RCT May 2017
• Sleep, Dr. Gominak and Vitamin D - several studies
• Restless Legs Syndrome dramatically reduced by vitamin D, etc
• On the job sleepiness 2.2X more likely if low vitamin D – Feb 2020
• Poor sleep 1.5 X more likely if less than 20 ng of Vitamin D – Feb 2019
• The Better Sleep Vitamin (Vitamin D) – nice 3 dollar book Feb 2015
• The worse the sleep apnea, the lower the vitamin D levels – meta-analysis 2017, 2020
• Vitamin D for better sleep video - Dec 2021
• 5X increase in sleep problems in a decade in US Veterans
• Sleep Apnea and Vitamin D - many studies
• Melatonin and Vitamin D - many studies does much more than improve sleep