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Analysis v1
Contested

If you don’t get enough sleep just one night, your body makes more of the hunger hormone and less of the fullness hormone, which might make you feel hungrier the next day.

47
Pro
59
Against

Evidence from Studies

Supporting (1)

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Community contributions welcome

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Short Sleep Duration Is Associated with Reduced Leptin, Elevated Ghrelin, and Increased Body Mass Index

Cohort Study
Human
2004 Dec

This study found that people who slept less had higher levels of the hunger hormone (ghrelin) and lower levels of the fullness hormone (leptin), just like the claim says — so yes, a bad night’s sleep can make you hungrier.

Contradicting (1)

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Community contributions welcome

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Effects of experimental sleep restriction on caloric intake and activity energy expenditure.

Randomized Controlled Trial
Human
2013 Jul

The study looked at what happens after being sleep-deprived for eight nights, not just one, and found no change in the hunger hormones mentioned in the claim. So it doesn’t support the idea that one bad night of sleep causes big hormone shifts.

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Similar Assertions

When adults between 30 and 60 don’t get enough sleep over a long time, their body makes less of a hormone that tells them they’re full; but if they miss a night of sleep, their body makes more of a hormone that makes them feel hungry—so different kinds of sleep loss affect hunger in different ways.

47
0
83%

If you only sleep 5 hours instead of 8, your body might produce more of a hormone that makes you feel hungrier — even if you’re the same weight, age, or sex as someone who sleeps longer.

47
0
78%

If you don’t get enough sleep for 8 days, your hunger hormones don’t change much—so if you end up eating more, it’s probably not because these hormones are telling you to.

59
0
73%

People who sleep only 5 hours a night tend to have lower levels of a hormone that tells your brain you're full, compared to those who sleep 8 hours — even if they're the same weight or age — which might make them feel hungrier.

47
0
72%