Journal of Andrology
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Published-Ahead-of-Print August 14, 2009, DOI:10.2164/jandrol.109.007856

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Sleep, Sex Steroid Hormones, Sexual Activities, and Aging in Asian Men

Victor H-H Goh * and Terry Y-Y Tong

* To whom correspondence should be addressed. E-mail: vgoh{at}labiomed.org.

This was a cross-sectional study to examine the different association of age and sleep duration with sex steroid hormones and sexual activities in 531 Asian Chinese men aged between 29 y and 72 y old. Methods: Sleep duration and sexual activities were evaluated through a self-administered questionnaire, while total testosterone (T), sex hormone binding globulin (SHBG), estradiol (E2) and dehydroepiandrosterone sulphate (DHEAS) were measured by established immunoassay methods in a single blood sample collected between 8.00am and 11.00am. Bioavailable testosterone (BioT) was calculated using the Vermeulen's formula. Results: Age was a major determinant of sleep, sex steroid hormones and sexual activities in men. BioT, DHEAS, coital frequency (CoitalF), masturbation and sleep duration (SlpD) declined with age. On the other hand, SHBG and E2 increased with age. Sleep duration, independent of age, aerobic exercise and body fat was positively associated with T and BioT, but not with DHEAS and E2 or any of the sexual activities studied. Men who masturbated had higher levels of both T and BioT. DHEAS was significantly associated with coital frequency and desire for sex. Conclusion: The present study showed that besides age, sleep duration was associated with androgen concentrations in men and thus the promotion of good sleep hygiene might be an important adjunct management modality for men with low androgen concentrations as well a history of poor sleep. DHEAS may be associated with some sexual functions in men.


Key words: Androgen • Andropause






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