If you aren't getting enough sleep you may be eating too much as a result.
"We tested whether lack of sleep altered the levels of the hormones leptin and ghrelin, increased the amount of food people ate, and affected energy burned through activity," said Virend Somers, M.D., Ph.D., study author and professor of medicine and cardiovascular disease at the Mayo Clinic, Rochester, Minn.. Leptin and ghrelin are associated with appetite.
The researchers studied 17 normal, healthy young men and women for eight nights, with half of the participants sleeping normally and half sleeping only two-thirds their normal time.
Participants ate as much as they wanted during the study.
- The sleep deprived group, who slept one hour and 20 minutes less than the control group each day consumed an average 549 additional calories each day.
- The amount of energy used for activity didn't significantly change between groups, suggesting that those who slept less didn't burn additional calories.
- Lack of sleep was associated with increased leptin levels and decreasing ghrelin — changes that were more likely a consequence, rather than a cause, of over-eating.
"Sleep deprivation is a growing problem, with 28 percent of adults now reporting that they get six or fewer hours of sleep per night," said Andrew D. Calvin, M.D., M.P.H., co-investigator, cardiology fellow and assistant professor of medicine at the Mayo Clinic.
Have you gradually put on too much weight? Do you sleep enough? Try changing your lifestyle so that you can get more sleep.
This isn't new news. Other researchers have found a relationship between less sleep, greater appetite, and more weight gain.
|Share |||Randall Parker, 2012 March 14 10:28 PM Brain Sleep|