Sleep and Nutrition May 2016
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Transcript of Sleep and Nutrition May 2016
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Sleep and Nutrition in Teenagers
Dr. Jennifer Vriend, PsychologistQueensview Professional Services
Anna Aylett, Registered DietitianCHEO, Centre for Healthy Active Living
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Tonight
Sleep in Teenagers (Jenn)Nutrition in Teenagers (Anna)Sleep and Nutrition in Teenagers
(Jenn and Anna)
Questions
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Sleep in Teenagers
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What makes us sleepy?Sleep Pressure
Our bodies need a ‘refill’ each night
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What makes us sleepy?Clocks (Circadian Rhythm)
Internal clock tell us to be tired at night and awake during the day
Balances our sleep drive keeps us awake during the day
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Melatonin – the hormone of darkness
Clock works by producing melatonin
Melatonin makes us sleepy Melatonin is produced when it gets
dark Melatonin levels rises in mid to late
evening Remain high during night Drop in the morning
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The Stages of Sleep•Stage 1
•Stage 2
•Slow wave sleep (Stage 3 and 4)
•Rapid eye movement (REM) sleep
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• Then you begin the cycle all over again
• You repeat the stages about every 90 minutes until you wake up in the morning
• For most kids, that's about 4 or 5 cycles a night
Mostly NREM early in nightMostly REM in early morning hours
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How much sleep do our children need?There is no “correct” amount What determines the right amount of
sleep for each child is whether they wake up feeling well-rested varies greatly between individuals Average sleep durations for specific age
groups are…
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10How much sleep do children need?
Infants 14-15 hours Toddlers 12-14 hours Preschoolers 11-13 hours School-Age Children 10-11 hours Teenagers 9-10 hours
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Sleep in Teens Struggle to get up in the morning Claim they aren’t tired at bedtime Sleep late on weekends Tired at school, struggle to
concentrate Adolescents typically get about 6-7
hrs of sleep – need 9-10 hours
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The Perfect Storm
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The circadian clock Clock shifts to new phase during
adolescents Phase delay occurs in association with
puberty Circadian system has altered sensitivity to
light Melatonin release occurs later▪ More sensitive to evening light, less sensitive to
morning light Occurs in other mammals▪ Suggests biological
12Biological Pressure
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Psychosocial Factors
Set their own bedtimes = More likely to set later bedtimes and
more likely to need parents to wake them
JobsAcademic PressuresSocializing
Staying up late to talk on phone, parties Electronics
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ElectronicsGreater use of electronics before
bedtime leads to: shorter, later, and more disrupted sleep
Alerting Involve exposure to blue- spectrum light, circadian clock has greater sensitivity toward
Phase delay worsens
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Consequences of inadequate sleep Sleepiness, mood disturbances,
inattention, poor grades, behaviour problems, substance use, driving crashes, weight gain, increased appetite, increased stress, immune system compromise
Sufficient sleep - Memory and learning, energy, illness, mood, weight control, etc.
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Nutrition and Teenagers16
Common nutrition challenges for teens
Benefits of Healthy Eating Hunger Management Strategies
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Nutrition Challenges for Teens
Skipped mealsLow proteinScreen time during meals/snacksDistracted/mindless eatingToo many sweet drinksToo much restaurant/cafeteria foodOver-hungry after schoolLate night snacking (usually treat
foods)
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Benefits of Healthy Eating
Energy Immune system Concentration and academic
performance Athletic performance Mood Stress management
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Hunger Management19
Over-hunger over-eatingKeep ahead of hunger by: Eat breakfast (and lunch and dinner) Listen and respond to hunger (snack as
needed) Balance: 2+ food groups/snack 3+ food groups/meal Eat at a table, with others, no screens One small sweet drink per day max Plan meals and snacks as a family
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Sleep and Nutrition (and Exercise)
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Sleep affects Eating Hunger Hormones Insulin Resistance Stress Hormone
Eating affects Sleep What foods make sleep worse What foods improve sleep
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Regulation of Eating
• Produced in the stomach, signals hunger
Ghrelin“GO” EAT
• Released by fat cells, signals the brain to feel full
Leptin“STOP” EATING
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Regulation of appetite
Ghrelin• You’re
hungry
Leptin• You aren’t
full
Insu
fficie
nt
Slee
p
• MORE HUNGRY, LESS SATISFIED
• = EAT MORE
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What is Insulin
Insulin is needed for glucose to get inside the cell
Glucose is the fuel for our cells
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Insulin
Eat
Food broken down
to glucose
Glucose
enters blood
stream
Glucose
levels high = releas
e insulin
Insulin signals to cells to take
in glucos
e
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Healthy Functioning
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Insufficient sleep causes Insulin Resistance
Eat
Food broken down
to glucos
e
Glucose
enters blood
stream
Glucose is
locked out of cells
Glucose level ↑ in
blood
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Health Problems- Impaired ability to burn and digest fat- pre-diabetic state
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Cortisol
Cortisol The stress hormone
Poor sleepers secrete more cortisolSleep deprivation
Can increase cortisol▪ Crave sugary and high-fat foods
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Insufficient Sleep Leads to
Insufficient Sleep Hungrier Less satisfied, don’t feel full Affects insulin levels Less likely to eat healthy foods
Chronic sleep deprivation increased risk of obesity, diabetes, heart disease
Good Sleep Helps control appetite and promote healthy eating
patterns
How does eating affect sleep?
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Choosing FoodSleep can affect what you eat, BUT
what you eat also affects sleep Caffeine Alcohol▪ Initially can make sleepy▪ Disrupts REM sleep
Vitamins and Minerals
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Lack of Sleep
Caffeine
cravings
More Caffein
e
Poor Sleep
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Vitamins and MineralsVitamin B6
Helps with melatonin production = more sufficient sleep
Fish, chick peas, bananasCalcium
Deficits make it hard to fall asleep▪ Dairy products, kale, soy products
Magnesium Deficits make it hard to stay asleep▪ Nuts and seeds, spinach, bananas
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The “Not-So-Secret” Formula
Healthy
Sleep
Healthy Food Choice
s
Improved
Health
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Tips for Improving Sleep and NutritionBedroom
Comfortable, quiet, and darkUse bedroom for sleeping, not
punishment or entertainment zoneHave “shut-off” time for electronicsDim lights in the evening
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Sleep Schedule Bedtime and wake-up time
Bedtime Routine 20-30 min bedtime routine ▪ Same each night▪ Calming activities such as a bath,
reading a book, listening to music, drawing, etc▪ Go to bed when sleepy
Tips for Improving Sleep and Nutrition
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Positive Associations
If you are in bed and awake for more than 20 - 30 mins, you should get out of bed
Stay out of bed for about 30-minutes (or less if you are sleepy) doing a non-alerting activity, then go back to bed
Goal is to associate bed with sleeping, rather than with being awake
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Faded Bedtime If you are having difficulty getting to sleep
within about 30 mins Try staying up a bit later (about an hour) If you go to bed when tired, you are likely
fall asleep faster After a night or two of this later bedtime, go
to bed about 15-20 mins earlier. Continue this pattern until you are going to bed at an appropriate time
Make sure your teen wakes up at the same time every day and that s/he doesn’t nap during the day.
This will help get your teen’s Internal Clock back on track
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Choosing FoodLimit caffeine after 3 pmSmall snack before bedAvoid large meals 3-4 hrs before bed
Especially spicy, acidic, or greasy foods▪ Increase heartburn and acid reflux
Hydrate with waterConsume foods rich in B6
Salmon, bananas, fortified cereals and oatmeal, chickpeas, walnuts, tart cherry juice
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Choosing Food
Treat yourself to a snack having a small, protein rich snack before
bed ▪ keep your belly happy overnight ▪ provide fuel to muscles to aid in the
rebuilding and recovery process▪ protein sources: nuts, seeds, dairy, beans,
eggs, meat Eat breakfast every day (within 1
hour of waking up)Avoid going more than 2-4 hours
without food (avoid over-hunger)
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For further information:www.css-scs.cawww.dietitians.ca
Take Aways• Sufficient sleep + regular sleep schedule • critical in controlling appetite • promoting healthy eating patterns
• Healthy eating promotes • Better quality and quantity of sleep• Healthier sleep patterns
= OVERALL IMPROVEMENT IN HEALTH