Almost a third of adults have trouble sleeping, and about 10 percent have symptoms of daytime impairment that signal true insomnia.
Sufferers readily cite the resulting problems: walking around in a fog, as memory and other cognitive functions slow. Dozing off at the wheel or at work. Depression. Lack of energy.
But for all the complaints, scientists […]
Study Findings:
Those who got less than 8 hours of sleep a night had 16% lower levels of the hormone leptin, which controls hunger, and had 15% higher levels of ghrelin, a hormone that stimulates appetite.
The ideal amount of sleep for weight control is 7.7 hours/night.
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Study Findings:
Babies exposed to twice as much light from 12-4pm became better sleepers.
Babies who slept well at 6 weeks were likely to be a good sleepers at 12 weeks.
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Original Research: The relationship between daytime exposure to light and night-time sleep in 6-12-week-old infants
Study Findings:
Lack of sleep has a bad effect on the “appetite control” hormone leptin. Leptin is a widely studied hormone, thought to be the secret to obesity. Produced by fat cells, our leptin levels tell the brain when the body does or doesn’t need more food.
Sleep deprivation plays an important role in regulating our leptin […]
Study Findings:
Treatment with melatonin — a hormone believed to play an important role in the sleep cycle — improves slumber for people with asthma.
The women in the melatonin group had greatly improved sleep quality, compared to the women who took the placebo. Neither group showed changes in asthma symptoms, daily peak expiratory flow rate, or […]