Vitamin D deficiency has been linked to poor sleep quality and duration, affecting roughly 35% of Americans. Research highlights a strong connection between Vitamin D levels and sleep disorders, especially Obstructive Sleep Apnea (OSA). Supplementation with Vitamin D can potentially improve sleep quality and reduce nighttime awakenings. Vitamin D deficiency has been linked to poor sleep quality and duration, affecting roughly 35% of Americans. Research highlights a strong connection between Vitamin D levels and sleep disorders, especially Obstructive Sleep Apnea (OSA). Supplementation with Vitamin D can potentially improve sleep quality and reduce nighttime awakenings. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle