Expert: How Sleep (Or Lack Thereof) Affect Healthy Development and Cognition

Healthy Sleep for the School Year

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The importance of quality sleep for children cannot be overstated. It is crucial to fuel active brain development, physical growth and emotional regulation. The American Academy of Sleep Medicine, endorsed by the American Academy of Pediatrics, recommends 11 to 14 hours per day for 3- to 5-year-olds, nine to 12 hours per day for 6- to 12-year-olds and eight to 10 hours a day for adolescents. Dr. Janine Rethy shares how parents can help ensure children are getting the amount and quality of sleep they need to fuel their active lifestyles, academic success and emotional development.

How can parents ensure their children are getting the right amount and quality of sleep for a restorative night?

Adequate sleep is a vital health, development and well-being issue for children. Sleep should be protected! Communicating sleep as a priority and creating healthy daytime and bedtime routines and structure is important.
Bedtime varies slightly for optimal sleep — earlier for school-age children and later for adolescents due to shifts in the natural melatonin cycle. Here are tips for helping to ensure children get enough quality sleep:
  • Establish a consistent bedtime and wake-up schedule.
  • Establish bedtime routine.
    • For younger children, the American Academy of Pediatrics recommends the “4 Bs” of bedtime routine: bathe, brush teeth, books and consistent bedtime.
    • For older children, turn off the electronics an hour or two before bedtime and create a routine such as a shower, read ing a book, listening to relaxing music.
  • Create a quiet, dark and cool sleep environment for sleep, and if possible, separated from other activities such as homework.
  • Daytime tips:
    • Morning sunshine exposure can set the circadian rhythm up for nighttime sleepiness.
    • Exercise.
    • Avoid eating too close to bedtime; lighter dinner meals
    • Avoid caffeine in younger children and limit it in adolescents to one to two servings per day in the morning only.
    • Afternoon naps in children older than 5 years old can contribute to difficulty falling asleep.

How does sleep affect child development, healthy cognitive function and growth?

Optimal sleep in children is associated with improved health, including physical health, learning, attention and emotional regulation.
Mental health disorders such as depression and anxiety and some other medical conditions can show as sleep disruption. Connect with your child’s pediatrician if you have concerns or sleep patterns do not improve.
What happens to a child’s ability to optimally function if they miss large amounts of sleep?
Every hour of lost sleep can produce measurable short-term and cumulative harm across a child’s health including obesity and metabolic health, mental health, emotional regulation, attention and executive functioning, cognitive performance and academic achievement.
If a child has missed several hours of sleep, a short nap during the day can help to offset some of the short-term impact. Adolescents can do some “catch-up” on the weekends, but it cannot replace all of the harm of insufficient sleep during the week. The goal is to try to return to adequate consistent sleep as soon as possible.
Janine Rethy, M.D. (Credit: MedStar Georgetown University Hospital)

Janine Rethy, M.D., MPH, FAAP, is the division chief of Community Pediatrics at MedStar Georgetown University Hospital in Washington, D.C. She is committed to helping families and communities become healthy and thrive, decreasing health disparities and teaching the next generation of community-oriented healthcare providers.

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