How Much Sleep Do Teenagers Need?
Most teenagers in America are chronically sleep-deprived. The American Academy of Sleep Medicine recommends 8-10 hours of sleep per night for teenagers — but the average American teen gets closer to 6-7 hours. The consequences go well beyond feeling tired.
Why Teenagers Are Biologically Wired to Sleep Later
Adolescent sleep isn’t just laziness or screens — there’s a biological explanation. During puberty, the circadian rhythm shifts by 1-2 hours, making it genuinely harder for teenagers to fall asleep before 11 p.m. and harder to wake up early. This shift is universal and hormone-driven.
Early school start times are in direct conflict with adolescent biology. The AAP has recommended that middle and high schools start no earlier than 8:30 a.m. for this reason.
What Happens When Teens Don’t Get Enough Sleep
- Impaired concentration, memory consolidation, and academic performance
- Increased risk of anxiety and depression
- Greater emotional reactivity and impulsive decision-making
- Elevated risk of car accidents (particularly in newly licensed drivers)
- Increased appetite and weight gain — sleep deprivation disrupts hunger hormones
- Weakened immune function
Practical Steps to Improve Teen Sleep
- Establish a consistent wake time even on weekends — it’s the most powerful circadian regulator
- No phones or screens in the bedroom after a set time — blue light suppresses melatonin by 2-3 hours
- Keep the bedroom cool, dark, and quiet
- Avoid caffeine after 2 p.m.
- Understand that catching up on weekends only partially compensates for weekday deficits
If your teen is struggling with sleep that’s affecting their mood or functioning, discuss it at their next adolescent medicine visit. Call (702) 457-5437.
