Stay thin by sleeping more?
Posted 12 January 2005 - 01:01 AM
Here's the story:
Posted 12 January 2005 - 09:58 PM
Posted 13 January 2005 - 04:17 AM
Posted 13 January 2005 - 06:37 PM
Posted 14 January 2005 - 10:06 AM
"However, while there is a growing awareness among some sleep, metabolic, cardiovascular, and diabetes researchers that insufficient sleep could be leading to a cascade of disorders, few in the general medicine profession or in the lay public have yet made the connection,"
"It has now been found that lack of sleep causes cancer." Heh. Wouldn't surprise me if that popped up somewhere. Though I can't help but wonder what kind of disorders they are talking about, besides growth problems and diabetes.
Posted 24 January 2005 - 10:17 PM
Posted 29 January 2005 - 05:09 PM
In an interview with Reuters, Turek said some studies have shown sleep deprivation causes declines in an appetite suppressing protein hormone called leptin, and increases in another hormone that causes a craving for food. In addition neuropeptides in the brain governing sleep and obesity appear to overlap, he said.
The part about lack of sleep changing the amount of two hormones related to eating (leptin and ghrelin) was also mentioned in Scientific American, back in December 04.
The researchers report today in the journal Public Library of Science: Medicine that people who consistently slept less than five fours a night had significant differences in the hormones leptin and ghrelin as compared with people who slept an average of eight hours a night. Leptin is produced by fat cells. Low levels of it are a signal of starvation and a need for a bigger appetite. Ghrelin, meanwhile, is produced by the stomach and is an appetite stimulant--the more ghrelin you have, the more you want to eat. The study subjects suffering a lack of sleep had 16 percent less leptin and nearly 15 percent more ghrelin than those who were well rested did. "In Western societies, where chronic sleep restriction is common and food is widely available, changes in appetite regulatory hormones with sleep curtailment may contribute to obesity," the team reports. (http://www.sciam.com...0000&sc=I100322)