Studies related to Sleep Latency and Vitamin D

The Effect Of Vitamin D Supplement On The Score And Quality Of Sleep In 20-50 Year-old People With Sleep Disorders Compared With Control Group

Effect Decrease
Values (minutes). Mean and SD. Placebo: before 65.00 ± 47.54 , after 58.57 ± 36.81. Vitamin D: before 49.88 ± 38.99, after 33.18 ± 27.9
Trial Design Randomized trial
Trial Length 1-6 months
Number of Subjects 93
Sex Both Genders
Age Range 18-29, 30-44, 45-64
Notes for this study:
In a randomized, double-blind, placebo-controlled trial, 93 participants with poor sleep quality were allocated to take either 200,000 IU of vitamin D or placebo every two weeks for 8 weeks. The baseline serum 25 (OH)D level was 25.00 ± 8.95 ng/ml in the vitamin D group and 27.60 ± 8.30 in the placebo group. At the end of the study, the vitamin D group saw an increase to 37.69 ± 12.25, while the placebo group didn't see a notable change.

Sleep quality, according to the PSQI was improved more in the vitamin d group, the difference being statistically significant. Sleep duration increased, sleep latency decreased, and sleep deficiency increased more in the vitamin D group than the placebo group, the differences being statistically significant, though adjustment for potential confounding factors resulted in the-value for sleep efficiency being p=0.082. While day time dysfunction decreased in the vitamin D group, the difference wasn't statistically significant.