A new study found that eating less fiber, more saturated fat and more sugar is associated with lighter, less restorative, and more disrupted sleep. Results show that greater fiber intake predicted more time spent in the stage of deep, slow wave sleep. In contrast, a higher percentage of energy from saturated fat predicted less slow wave sleep. Greater sugar intake also was associated with more arousals from sleep. “Our main finding was that diet quality influenced sleep quality,” said principal investigator Marie–Pierre St–Onge, PhD, assistant professor in the department of medicine and Institute of Human Nutrition at Columbia University Medical Center in New York, N.Y. “It was most surprising that a single day of greater fat intake and lower fiber could influence sleep parameters.” Study results are published in the January issue of the Journal of Clinical Sleep Medicine.
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