The longest recorded time without sleep is approximately hours , or just over 11 consecutive days. After only three or four nights without sleep, you can start to hallucinate. Prolonged sleep deprivation can lead to:. Read on to find out how staying awake for a full 24 hours or more can affect your body, and how much sleep you actually need to function. You might miss a night of sleep to work, cram for a test, or take care of a sick child. Still, missing a night of sleep does affect you. Studies have compared hour wakefulness to having a blood alcohol concentration of 0. This is above the legal limit to drive in most states. Your sleep-wake cycle helps regulate the release of certain hormones, including cortisol, insulin, and human growth hormone. As a result, going without sleep for an extended period of time can alter several bodily functions.
What is Sleep Deprivation?
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Are you missing out on those Zzzs? Learn what sleep deprivation could do to your help and how you can start catching up on getting some rest. Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission.
People need sleep to survive. Sleep allows your body to repair itself and perform essential biological functions. Adults need about 7 to 8 hours of sleep each night. But sometimes, work and lifestyle factors may disrupt your ability to sleep. But frequent or prolonged sleep deprivation can cause serious health issues. Lack of sleep can lead to poor cognitive function, increased inflammation, and reduced immune function. If sleep deprivation continues, it may increase your risk for chronic disease.
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