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Vitamin D Levels Linked to Daytime Sleepiness, Journal of Clinical Sleep Medicine Reveals


12/17/2012 7:30:15 AM

A new study suggests that there is a significant correlation between excessive daytime sleepiness and vitamin D, and race plays an important factor. Results show that in patients with normal vitamin D levels, progressively higher levels of daytime sleepiness were correlated inversely with progressively lower levels of vitamin D. Among patients with vitamin D deficiency, sleepiness and vitamin D levels were associated only among black patients. Surprisingly, this correlation was observed in a direct relationship, with higher vitamin D levels associated with a higher level of sleepiness among black patients.

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