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Lack of Sleep Effects on Appetite

Inadequate sleep stimulates the endocannabinoid system (eCB)— a group of nervous system receptors that affect appetite, pain sensations, mood, and memory. The system triggers the psychoactive effects of marijuana. Erin Hanlon from the Sleep and Metabolism and Health Center at the University of Chicago found that sleep deprivation— 4.5 hours per night for four nights— increased secretion of endocannabinoids, appetite, and hunger compared to normal sleep (8.5 hours per night). These sleep deprivation symptoms highlight the consequences of sleep deprivation, including increased appetite. Inadequate sleep increases the risk of type 2 diabetes, weakens the immune system, impairs mental function, and increases impulsive, risk-taking, and addictive behaviors. It also promotes overeating and eating unhealthy foods, demonstrating the link between sleep deprivation and overeating. (Sleep, 39:653-664)