"I would sleep maybe three, three-and-a-half hours and I'd be wide awake no matter what time of night it was."
"During the day, my Non-24 can lead to a sort of battle inside of me to maintain alertness."
"My Non-24 symptoms lead to feelings of loss of control and inability to be on top of things and process information."
Welcome to Non-24.com, your resource about Non-24-Hour Disorder
Like many people, you may be experiencing sleep challenges you don't understand, nights of sleeplessness, and days when you fight to stay awake.
This may sound like a sleep disorder, but it's actually Non-24-Hour Disorder (Non-24), a circadian rhythm disorder.Learn more about Non-24
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What is Non-24-Hour Disorder?
Non-24 is a serious, chronic circadian rhythm disorder that's very common in people who are totally blind. It causes nighttime sleep problems and a wide range of daytime difficulties, including an overwhelming urge to nap that can lead to decreased productivity, as well as complications in your social life. This website will help you understand Non-24, help you manage its impact on your life, and give you the information you need to talk about it with family, friends, and doctors.
Non-24 and your master body clock
Everyone has a master body clock. For most people, the body clock runs slightly longer than 24 hours and is reset every day by environmental light that's detected by the eye, which then signals the brain. For people who are totally blind, however, the body clock becomes out of sync with the 24-hour day-night cycle, and your body's natural rhythms can sometimes have you sleeping during the day and awake at night. Because the non-24-hour body clock creates an ever-shifting sleep-wake cycle, Non-24 is classified as a circadian rhythm disorder.
Could you have Non-24?
Non-24 makes it difficult to fall asleep or stay asleep at night and creates an uncontrollable urge to sleep during the day. This can lead to exhaustion and a decrease in overall functionality and well-being, difficulties in managing school or work, and problems with concentration. Do you have any of these symptoms?
/ Latest News
Tune in to hear blind adventurer Erik Weihenmayer talk about Non-24
Beginning on Monday, December 16, blind adventurer Erik Weihenmayer will share his Non-24-Hour Disorder story with radio listeners across the country. Read more
Circadian Pursuit: Test Your Knowledge
How much do you know about Non-24, circadian rhythms, and blindness? This quiz will tell you. Read more
Study Shows Master Body Clock Battle for Blind
A study by the Royal New Zealand Foundation of the Blind has revealed "drifting sleep patterns" among 26% of totally blind New Zealanders. Read more