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The risk of sleep apnea is usually much lower in women than in men but increases once menopause occurs.
It also appears to be attenuated by hormone replacement therapy, according to Dr. Edward O. Bixler of the sleep research and treatment center at Pennsylvania State University; Hershey, and his associates.
The researchers evaluated 1,741 subjects to compare the frequency of sleep-disordered breathing between women and men.
"This is the first sleep laboratory study of a large representative random sample of women and men from the general population to investigate the difference in prevalence of sleep-disordered breathing ... with a particular emphasis on the impact of menopause and HRT," they said (Am. J. Resp. Grit. Care Med. 163[3, pt. 1]:608-13, 2001).
Overall, the prevalence of sleep apnea was 1.2% in women and 3.9% in men.
Postmenopausal women who weren't taking HRT had a higher prevalence of sleep apnea (2.7%) than did premenopausal women. In comparison, the prevalence of sleep apnea was 0.6% in ...
Source: HighBeam Research, Menopause Raises Sleep Apnea Risk, but HRT Helps Lower It.