Lack of Sleep Has 'Profound Consequences' on Toddlers

Little kids can get really grouchy when they miss a nap. Sleep researchers are beginning to find out that the impact may actually be far greater.

New studies suggest skipping even one nap can have a big effect on a toddler's behavior. Dr. Judith Owens, director of sleep medicine at Children's National Medical Center, says there are even indications that sleep deprivation could set back cognitive development.

"We think loss has really profound consequences, not only on things like behavior and learning, but also on things like metabolic function."

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