I have spent a meaningful portion of my career talking to the tops of people’s heads. Not by choice. I walk into the exam room, say hello, and I’m greeted by a part in someone’s hair and the soft blue glow of a phone screen lighting a face from below like a campfire ghost story. I ask, “How’s school going?” The head nods. I ask, “Are you sleeping okay?” The head nods. I ask, “Have you noticed any new symptoms, like growing a second head?” The head nods. I could say anything at this point. I could tell them the cure for acne is licking a doorknob, and I’d get the same slow, agreeable bob, like a dashboard ornament on a gravel road.
And in fairness to teenagers, often the head belongs to a parent. I’ve answered a mother’s carefully worded question in full detail, complete with attempted eye contact and hand gestures, only to find her nodding at a group chat. We are all in this together. We are all looking down.
Your Teenager Is Not Lazy. They’re Jet-Lagged From a Trip They Never Took.
Here’s the part that isn’t funny. Teenagers need a lot of sleep. Kids ages 6 to 12 need 9 to 12 hours a night, and teens ages 13 to 18 need 8 to 10 hours, per the American Academy of Sleep Medicine recommendations that the CDC endorses. How many are actually getting it? According to the CDC’s 2025 Youth Risk Behavior Survey, about 1 in 4 high school students got at least 8 hours on an average school night. One in four. The other three are walking around in what can only be described as a medically supervised zombie apocalypse, except nobody is supervising it.
Biology already stacks the deck. Adolescents naturally shift toward later sleep times, so they don’t feel tired at 9 p.m. Add early school start times and you’ve built a sleep deficit before the phone even shows up. Then the phone shows up, and it brings friends: group chats, short videos engineered by very smart people to never end, games with “just one more round” built into the code, and the constant, gnawing fear that something hilarious is happening without them.
It’s Not the Screen. It’s Where the Screen Sleeps.
Now for some nuance, because I am a doctor and not a cable news chyron. A 2024 study in JAMA Pediatrics put body cameras on kids ages 11 to 14 to track what they actually did before bed, which is a level of surveillance most parents only dream about. Screen time in the two hours before bed didn’t do much damage on its own. But screen time once they got into bed delayed falling asleep by about 35 minutes compared with nights without screens. Interactive stuff, like gaming and juggling multiple devices at once, was the worst offender, cutting roughly 9 minutes of sleep for every 10 minutes of use.
Translation: the bed is the crime scene. A kid watching a show on the couch at 8:30 is not the problem. A kid “just checking one thing” under the covers at 11:47 p.m. is absolutely the problem, and so is the kid who’s still checking at 1:15.
A large study of more than 9,000 preteens ages 11 and 12 from the NIH-funded ABCD research project found that having a TV or internet connected device in the bedroom was linked to shorter sleep a year later. My personal favorite finding: kids who left their phone ringer on overnight had more sleep disturbance and less sleep than kids who turned their phones off. Even silent mode wasn’t the answer. Somehow these kids are sleeping with a slot machine on the nightstand, and we’re surprised they aren’t well rested.
What Lost Sleep Actually Costs
Parents sometimes treat teen sleep like a nice bonus, like a clean room or a thank you note. It isn’t. The CDC links insufficient sleep in high school students to higher risk of obesity, diabetes, injuries, poor mental health, attention and behavior problems, and worse grades. That’s not a “they’ll grow out of it” list. That’s a “please make a follow-up appointment” list.
In clinic, it rarely shows up labeled as a sleep problem. It shows up as “he’s so moody,” “her grades dropped,” “he’s always tired, can you check his thyroid,” or “she gets headaches every afternoon.” Sometimes we do need blood work. Very often, though, the most useful lab test would be a printout of the phone’s screen-time report at 2 a.m.
How to Win the Bedtime War (or at Least Negotiate a Ceasefire)
You don’t need to throw the phone in a lake. Tempting, I know. Here’s what actually works.
Evict the phone from the bedroom. The American Academy of Pediatrics recommends keeping screens out of bedrooms at night and charging them somewhere else. Build a family charging station in the kitchen. Make it boring, make it nonnegotiable, and make it apply to everyone, which brings us to the painful part.
PARENTS GO FIRST!!!
If you scroll in bed until midnight, your teenager has noticed, and they will bring it up during the argument. They’re right. Model the behavior or prepare to lose the debate.
Set a digital curfew. The AAP suggests powering down about an hour before bed. Based on the research, the hard line is the bed itself. If your house can’t manage a full hour, start by making “no screens once you’re in bed” the rule that never bends.
Kill the ringer. Not silent. Off. Or better yet, in another room where its buzzing can bother the toaster.
Use the AAP Family Media Plan. It’s a free tool that helps families set screen rules together. Teens buy in more when they help write the rules, even if they act like you’re asking them to sign a hostage agreement.
Buy an actual alarm clock. “I need my phone for my alarm” is the oldest trick in the book. A real alarm clock costs less than a pizza. Call the bluff.
Watch for real sleep problems. If your teen is in bed, phone-free, and still can’t fall asleep, snores loudly, or is exhausted despite enough hours, talk to your pediatrician. Sometimes it really is more than the phone.
The Bottom Line
I’d love to walk into an exam room and see an actual face. Maybe even a well rested one. I’d love to ask, “How are you sleeping?” and hear a full sentence instead of watching a scalp nod at me like a tiny, sleepy bobblehead. The phone doesn’t need eight hours of rest on the nightstand. Your kid does. Give the phone a bedroom of its own: the kitchen counter.
This post is for educational purposes only and is not a substitute for individualized medical advice. If you have concerns about your child’s sleep, health, or behavior, talk with your child’s pediatrician or health care provider.
Sources:
CDC, Sleep and Health (Healthy Schools): https://www.cdc.gov/healthy-schools/sleep/index.html
CDC, Youth Risk Behavior Survey, Sleep: https://www.cdc.gov/yrbs/youth-health-in-focus/sleep.htmlCDC, Chronic Disease Indicators, Sleep: https://www.cdc.gov/cdi/indicator-definitions/sleep.html
Brosnan et al., Screen Use at Bedtime and Sleep Duration and Quality Among Youths, JAMA Pediatrics, 2024: https://pmc.ncbi.nlm.nih.gov/articles/PMC11372655/NHLBI, Study reveals how screen time affects sleep in preteens: https://www.nhlbi.nih.gov/news/2024/study-reveals-how-screen-time-affects-sleep-preteens
American Academy of Pediatrics, Screen Time Affecting Sleep: https://www.aap.org/en/patient-care/media-and-children/center-of-excellence-on-social-media-and-youth-mental-health/qa-portal/qa-portal-library/qa-portal-library-questions/screen-time-affecting-sleep/
HealthyChildren.org (AAP), Healthy Sleep Habits: https://www.healthychildren.org/English/healthy-living/sleep/Pages/healthy-sleep-habits-how-many-hours-does-your-child-need.aspx