The effects of vitamin D on sleep quality and pregnancy symptoms in pregnant women: a randomized, tripled-blinded and placebo-controlled clinical trial
Abstract:Purpose
Because of the importance of having enough sleep in life and health, this study aims to determine the effect of vitamin D supplementation on sleep quality and pregnancy symptoms (primary outcomes) and side effects (secondary outcome).
Design/methodology/approach
In this triple-blind randomized controlled clinical trial, 88 pregnant women with gestational age of 8–10 weeks and serum vitamin D concentration less than 30 ng/ml were allocated into vitamin D (n = 44) and control (n = 44) groups by blocked… Show more
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