Thread: Sleep and metabolism/endocrine
08-27-2005, 09:37 AM #1
Sleep and metabolism/endocrineImpact of sleep debt on metabolic and endocrine function.
Spiegel K, Leproult R, Van Cauter E.
Department of Medicine, University of Chicago, IL 60637, USA.
BACKGROUND: Chronic sleep debt is becoming increasingly common and affects millions of people in more-developed countries. Sleep debt is currently believed to have no adverse effect on health. We investigated the effect of sleep debt on metabolic and endocrine functions. METHODS: We assessed carbohydrate metabolism, thyrotropic function, activity of the hypothalamo-pituitary-adrenal axis, and sympathovagal balance in 11 young men after time in bed had been restricted to 4 h per night for 6 nights. We compared the sleep-debt condition with measurements taken at the end of a sleep-recovery period when participants were allowed 12 h in bed per night for 6 nights. FINDINGS: Glucose tolerance was lower in the sleep-debt condition than in the fully rested condition (p<0.02), as were thyrotropin concentrations (p<0.01). Evening cortisol concentrations were raised (p=0.0001) and activity of the sympathetic nervous system was increased in the sleep-debt condition (p<0.02). INTERPRETATION: Sleep debt has a harmful impact on carbohydrate metabolism and endocrine function. The effects are similar to those seen in normal ageing and, therefore, sleep debt may increase the severity of age-related chronic disorders.
08-27-2005, 11:26 AM #2AR Hall of Fame
- Join Date
- Dec 2002
That sucks because I only slept 4 hours last night and ate more carbs than you could imagine, .
Before bed and at breakfast.
08-27-2005, 01:46 PM #3
lucky i slept all day today
08-27-2005, 04:42 PM #4
too much sleep is no good............
about 8 hours is perfect...
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