What are the consequences of chronic lack of sleep? For example, insomniacs are known to sleep less than normal sleeping individuals.

I am wondering if there are any long term cognitive impairments from reducing sleep time to, say 4h instead of the normally recommended 8 hours in the long run, say for a year or so?


closed as off-topic by Seanny123, mfloren, Robin Kramer, Steven Jeuris Oct 18 '17 at 9:04

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question is not framed within the cognitive sciences. It is based on assumptions which are not made explicit, are not well-motivated (e.g., referenced), or are not held to be true within the cognitive sciences. For more information, see Why was my question closed as “not framed in cognitive sciences”?" – Seanny123, Robin Kramer, Steven Jeuris
If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ The websites I link to in my more specific question mentions a couple of cognitive impairments, and I also list articles which state how some of them are overcome in the short term. Perhaps these sources can help you formulating a better sourced, well-defined, question? Specifically, "attention-dependent neural processes do not normalize after this period of time in habitually short sleeping individuals and may require longer recovery periods". $\endgroup$ – Steven Jeuris Oct 18 '17 at 9:02

Wikipedia has some good information on this issue. Search for:

Effects of sleep deprivation on cognitive performance

In summary, 'yes', sleep deprivation can have a multitude of negative consequences on your cognitive abilities, like weakening your ability to handle complex cognitive tasks.


Not the answer you're looking for? Browse other questions tagged or ask your own question.