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Challenge: Bedtime Secrets

Bedtime snacks help kids sleep

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If dinner is at 5:30 p.m. it makes perfect sense that your child will be hungry again at 8:30 pm. So, go ahead and give them a bedtime snack. They aren’t necessarily trying to postpone sleep; they might just need some calories to get them through the night.

Toddlers who wake up with the sun may have been born with a circadian rhythm that tells them to get up very early -- but these kiddos also might wake up because they are hungry. Twelve hours is a long time not to eat! So if your little one doesn’t ask for a bedtime snack, consider whether they may need one. Some children might not feel the sensation of hunger or recognize they are hungry. But their brain can still send signals that wake them up.

Two hormones, leptin and ghrelin, regulate hunger. When we eat, leptin signals the body that we are satisfied and suppresses ghrelin, the hunger hormone. If you have enough leptin to suppress your appetite you’ll sleep through the night. But when leptin falls and ghrelin is unleashed, your brain will be signaled to wake up and eat. Sometimes that happens at 2am.

Consider this: you may not think you are serving breakfast at 5:15am when you give your toddler a big cup of milk. But that is exactly what you are doing. Try giving your early riser a snack before bedtime for a week and see if they sleep just a little later. And keep the bedtime bite to a snack – not a heavy meal. The digestive system slows down when we sleep, so eating too much can be uncomfortable or over-stimulating.


Carbs help regulate the circadian rhythm

It's no surprise that a carbohydrate-rich meal will make you sleepy. In fact, researchers from Japan’s Yamaguchi University discovered that eating a carbohydrate snack in the evening may actually help reset your circadian clock. Carbohydrates (like crackers and fruit) increase insulin secretion more than foods rich in protein and fat. The researchers found that insulin influences a crucial sleep-regulating gene. So if you eat more carbs at bedtime, you increase sleep-regulating chemicals in the body and you’re drowsy at the right time of day.

Bedtime snacking may also help kids' daytime behavior. A good night's sleep will make a child more alert in the morning. And that means she may be more cooperative with putting on her shoes.

Giving any type of food as a snack in the hour before bed will suppress hunger all night. However, high fat foods interfere with all stages of sleep and high protein snacks seem to affect the quality of sleep. Here are some specific foods that may be more sleep-inducing:

Pumpkin seeds and almonds – high in magnesium, which can relax muscles

Milk, turkey and hazelnuts – high in tryptophan, an amino acid that converts into melatonin, which helps the body sleep

Popcorn – carbohydrate-rich foods like popcorn increases tryptophan in the blood. Choose air-popped corn to reduce pre-bedtime fat consumption.

Cherries, bananas and pineapples – any fruit is a good choice, they all have complex carbohydrates and are low calorie. Cherries have the highest concentration of naturally occurring melatonin.

Kiwi – linked to longer sleep time in problem sleepers, possibly because its antioxidants regulate neurotransmitters that control sleep.

Proteins provide tryptophan. And carbohydrates make tryptophan more available to the brain. So combining a whole wheat cracker with almond butter – or even treating yourself to milk and cookies — will help you or your baby sleep like, well, a baby.

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Chow, Chin Moi, and Christopher Paul Herrera. “Feeding and Sleep Behavior.” Handbook of Behavior, Food and Nutrition. Springer New York, 2011. 783-796.

Halson, Shona L. “Nutritional interventions to enhance sleep.” Sports Science Exchange 26.116 (2013): 1-5.

Knowlden, Adam P., Christine L. Hackman, and Manoj Sharma. “Systematic Review of Dietary Interventions Targeting Sleep Behavior.” The Journal of Alternative and Complementary Medicine (2016).

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