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By Rick Nauert PhD Senior News Editor
Reviewed by John M. Grohol, Psy.D. on June 1, 2011


Surprising new research from the University of Chicago suggests reduced sleep can lower testosterone levels in healthy young men.


While the study involved a very small sample, findings are consistent with emerging research that suggests low sleep duration and poor sleep quality can disrupt the endocrine, or hormonal, system, which is involved in metabolism, growth, tissue function and mood.


The study is found in the June 1 issue of the Journal of the American Medical Association (JAMA).


Investigators found that men who slept less than five hours a night for one week in a laboratory had significantly lower levels of testosterone than when they had a full night’s sleep.


Low testosterone has a host of negative consequences for young men, and not just in sexual behavior and reproduction. It is critical in building strength and muscle mass, and bone density.


“Low testosterone levels are associated with reduced well-being and vigor, which may also occur as a consequence of sleep loss” said researcher Eve Van Cauter, Ph.D.


According to experts, at least 15 percent of the adult working population in the U.S. gets less than 5 hours of sleep a night.


Read in Full:

http://psychcentral.com/news/2011/06/01/sleep-loss-lowers-testosterone/26603.html



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