Wêrom Tieners Minder Sliepe As Ea Earder
June 22, 2025 · Frisian News
New research shows teenagers today average 6.5 hours of sleep per night, down from 8 hours in the 1990s. Smartphones, homework loads, and earlier school start times drive the collapse.
FryskDe santjinjierrige Marcus kontrolearret syn telefoan om 2 oere nachts foar de fjirde kear dy nacht. Hy hat húswurk calculus oant 8 oere moarns, skoalle begjint om 7:45, en syn freonen berjochtsje noch altyd oer it groepsprojekt fan moarn. Hy falt yn sliep om sa'n 3 oere, wurdt om 6 oere wekker, en rêdt him troch de dei hinne op reserve. Dizze sêne spilet him ôf yn miljoenen sliepkeamers yn Jeropa en Noard-Amearika, en de sifers befestigje wat âlden al jierren tinke: tieners hjoed-de-dei sliepe folle minder as harren pakes en beppes.
Ûndersyk publisearre yn it Journal of Sleep Medicine ferline moanne toande oan dat de gemiddelde tiener no 6,5 oere per nacht sliept, folle minder as 8 oant 8,5 oere yn de jierren njoggentich. De ôfname folget hast perfekt it gebrûk fan smartphones en sosjale media. Tieners mei telefoannen yn harren sliepkeamers sliepe 90 minuten minder as dejingen sûnder, merkt it ûndersyk op. It probleem is net dat sliep minder weardefol wurden is; it is dat de apparaten yn de hannen fan jonge minsken harren harsens oertsjûge hawwe dat sliep wachtsje kin.
Skoallen drage ek skuld. Folle skoallen hawwe yn de ôfrûne twa desennia begjintiiden earder set, mei de argumintaasje dat budzjettaire effisjinsje en sportroasters iepeningen fan 7 oere rjochtfeardigje. De biologyske klok fan adolescenten ferskoot twa oere foarút yn de puberteit, wat betsjut dat in start fan 7 oere foar it brein fan in tiener fielt as 5 oere. As jo húswurk tafoegje dat gewoanlik oant nei 10 oere jûns rint, plus bybaantsjes en bûtenskoalske druk foar oanfragen foar de universiteit, wurdt sliep in lúkse dy't konkurrearret mei alles oars. Folwoeksenen hawwe in systeem boud dat gjin romte foar sliep lit.
De sûnensgefolgen binne echt en mjitber. Kroanich sliepegebrek by tieners korreleart mei hegere depresje-persentaazjes, swakkere ymmunfunksje, en minder goede akademyske prestaasjes. Paradoksaal genôch studearje studinten dy't minder sliepe ek minder effektyf, wat betsjut dat se rêst opofferje om sifers te heljen dy't dan dochs lije. It brein konsolidearret ûnthâld ûnder sliep; der fan ôfsjen is lykas studearje wylst jo heal bewustleas binne. Dochs beskôgje de measte tieners sliep as ferspille tiid, in gewoante om te brekken ynstee fan te beskermjen.
Guon skoallen eksperimintearje no mei lettere begjintiiden, en in pear hawwe telefoannen út klaslokalen ferbean. Dizze maatregels helpe, mar behannelje symptomen, net it haadprobleem. Folwoeksenen hawwe tieners ark jûn, ûntworpen troch yngenieurs om omtinken fêst te hâlden en ympulskontrôle te ûnderdrukken, en dienen dan as wienen se skokt dat tieners net sliepe koene. Oant wy akseptearje dat it hjoeddeiske tempo en konnektiviteit lestiche karren freegje, is mear sliepegebrek yn de folgjende generaasje te ferwachtsjen.
Seventeen-year-old Marcus checks his phone at 2 a.m. for the fourth time that night. He has calculus homework due at 8 a.m., school starts at 7:45, and his friends are still messaging about tomorrow's group project. He falls asleep around 3 a.m., wakes up at 6, and gets through the day on fumes. This scene plays out in millions of bedrooms across Europe and North America, and the numbers confirm what parents have suspected for years: teenagers today sleep far less than their grandparents did.
Research published in the Journal of Sleep Medicine this month found that the average teenager now sleeps 6.5 hours per night, down sharply from 8 to 8.5 hours in the 1990s. The decline tracks almost perfectly with smartphone adoption and social media use. Teenagers with phones in their bedrooms sleep 90 minutes less than those without, the study notes. The problem is not that sleep has become less valuable; it is that the devices in young people's hands have convinced their brains that sleep can wait.
Schools bear some blame too. Many districts pushed start times earlier over the past two decades, claiming budget efficiency and sports scheduling justified 7 a.m. openings. Adolescent biology shifts the body clock forward by two hours during puberty, meaning a 7 a.m. start feels like 5 a.m. to a teenager's brain. When you add homework that routinely runs past 10 p.m., plus part-time jobs and extracurricular pressure to pad college applications, sleep becomes a luxury that competes with everything else. Adults built a system that leaves no room for it.
The health consequences are real and measurable. Chronic sleep deprivation in teenagers correlates with higher depression rates, weaker immune function, and worse academic performance. Paradoxically, students who sleep less also study less effectively, meaning they sacrifice rest to chase grades that suffer anyway. The brain consolidates memory during sleep; skipping it is like studying while half-conscious. Yet most teenagers view sleep as wasted time, a habit to break rather than protect.
Some schools now experiment with later starts, and a few have banned phones from classrooms. These measures help, but they treat symptoms, not the root problem. Adults have handed teenagers tools designed by engineers to capture attention and suppress impulse control, then acted shocked when teenagers cannot sleep. Until we accept that the current pace and connectivity demand hard choices, expect the next generation to sleep even less.
Published June 22, 2025 · Frisian News · Ljouwert, Fryslân