Question

please write an article of sleep deprivation in about 120 words

Answer 1

Sleep deprivation is the condition of not having enough sleep; it can be either chronic or acute. A chronic sleep-restricted state can cause fatigue, daytime sleepiness, clumsiness and weight loss or weight gain.[1] It adversely affects the brain and cognitive function.[2] However, in a subset of cases sleep deprivation can, paradoxically, lead to increased energy and alertness and enhanced mood; it has even been used as a treatment for depression (see below).[3][4] Few studies have compared the effects of acute total sleep deprivation and chronic partial sleep restriction.[2] Complete absence of sleep over long periods has not been seen in humans (unless they suffer from fatal familial insomnia); it appears that brief microsleeps cannot be avoided.[5] Long-term total sleep deprivation has caused death in lab animals.[6]