Recommended amount of sleep for pediatric populations: a consensus statement of the American Academy of Sleep Medicine. J Clin Sleep Med.
Recommended amount of sleep for a healthy adult: a joint consensus statement of the American Academy of Sleep Medicine and Sleep Research Society.
Links with this icon indicate that you are leaving the CDC website. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. You will be subject to the destination website's privacy policy when you follow the link. Although many people struggle to get the amount of sleep they need to feel refreshed, some regularly sleep longer than their body needs.
One might think this could endow these individuals with superpowers. However, researchers identify a link between longer sleep durations and poorer health. For instance, one study , which followed adults for 6 years, concluded:. This finding held even when the scientists controlled the analysis for age, sex, and baseline body mass index. Sleep duration might also impact mortality, according to some researchers. There is no record of anyone dying from sleep deprivation. In theory, it may be possible, but as far as scientists can ascertain, it is improbable.
It is understandable why this myth may have taken root, though. Sleep deprivation, as many people can attest, can feel horrendous. However, the case of Randy Gardner demonstrates that extreme sleep deprivation is not fatal.
In , when Gardner was just 16, he was part of a sleep deprivation experiment. In total, he stayed awake for 11 days and 24 minutes, which equates to During this time, he was monitored closely by fellow students and sleep scientists. As the days rolled on, sleep deprivation symptoms worsened, but he survived. So why has this myth persisted? The belief that sleep deprivation can kill might have its roots in a study from the s. Rechtschaffen and colleagues found if they deprived rats of sleep with a particular experimental method, they would die after 2—3 weeks.
In their experiments, the researchers placed rats on a disc suspended above water. They continuously measured their brain activity. Whenever the animal fell asleep, the disc would automatically move, and the rat would need to act to avoid falling in the water.
Rats deprived of sleep using different methods do not die. Also, other researchers who used the disc method on pigeons found it was not fatal for these creatures.
Sleep deprivation is not painless for humans, though. They asked Lieutenant Commander John J. Ross from the U. He describes a steady deterioration in function. For instance, by day 2, Gardner found it more difficult to focus his eyes.
By day 4, he struggled to concentrate and became irritable and uncooperative. On day 4, he also reported his first hallucination and delusion of grandeur. Paranoia kicked in during day 10, and on day 11, his facial expression and tone of voice became expressionless. Both his attention and memory span were significantly diminished. However, he did not die and apparently, did not experience any long-term health issues.
Another reason why the myth that sleep deprivation can be fatal persists might be due to a condition called fatal familial insomnia. People with this rare genetic disorder become unable to sleep. However, when individuals with this disease die, it is due to the accompanying neurodegeneration rather than lack of sleep. Although sleep deprivation will probably not kill you directly, it is worth adding a note of caution: being overtired does increase the risk of accidents.
Health Tools. Reviewed: November 16, Medically Reviewed. The National Sleep Foundation NSF and a panel of 18 experts combed through more than studies to identify the ideal amount of time a person needs to sleep according to their age: Newborns 0 to 3 months : 14 to 17 hours of sleep Infants 4 to 11 months : 12 to 15 hours of sleep Toddlers 1 to 2 years : 11 to 14 hours of sleep Preschoolers 3 to 5 years : 10 to 13 hours of sleep School-aged children 6 to 13 years : 9 to 11 hours of sleep Teenagers 14 to 17 years : 8 to 10 hours of sleep Young adults 18 to 25 years : 7 to 9 hours of sleep Adults 26 to 64 years : 7 to 9 hours of sleep Older adults 65 years or older : 7 to 8 hours of sleep.
Editorial Sources and Fact-Checking. Hirshkowitz, M, et al. March Glozier, N, et al. Losing Sleep Over Work? Does It Matter? Centers for Disease Control and Prevention.
March 7, The Ideal Temperature for Sleep.
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