Abstract
Androgen insufficiency is a recognized cause of sexual dysfunction in men and women. Age-related decrements in adrenal and gonadal androgen levels also occur naturally in both sexes. At present, it is unclear if a woman's low serum androgen level is a reflection of the expected normal age-related decline or indicative of an underlying androgen-deficient state. We studied premenopausal women with no complaints of sexual dysfunction to help define a normal female androgen profile. In all, 60 healthy, normally menstruating women, ages 20–49 y, were studied. The Abbreviated Sexual Function Questionnaire was administered along with a detailed interview. Radioimmunoassay measurements of morning serum testosterone (T), free testosterone (fT), dehydroepiandrosterone-sulfate (DHEAS), sex hormone-binding globulin (SHBG), and free androgen index (FAI) were measured during days 8–15 of the menstrual cycle. In women 20–49 y old without complaints of sexual dysfunction, serum androgen levels exhibit a progressive stepwise decline. Comparing values obtained in women age 20–29 y to those obtained in women 40–49 y, specific hormone decrements were DHEAS 195.6–140.4 μg/dl, serum T 51.5–33.7 ng/dl, fT 1.51–1.03 pg/ml. SHBG did not change significantly in women in this age group. The FAI reflected the age-related decrease in female androgen levels. The framework for the development of a female androgen profile in women with no complaints of sexual dysfunction has been established, and an age-related decrease in testosterone and its adrenal precursor, DHEAS, has been demonstrated. The FAI mirrors these decreases and its usefulness in clinical practice is confirmed. A precipitous decline in all androgens occurs after the decade of the 20s, yet SHBG does not show a significant change throughout the premenopausal years.
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This research was supported by a private grant from the Ellithorpe family.
Appendices
Appendix A. Abbreviated Sexual Function Questionnaire (ASFQ)
Appendix B
Criterion for determining normal sexual function can be summarized in Table B1 for the 15-item version of the SFQ
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Guay, A., Munarriz, R., Jacobson, J. et al. Serum androgen levels in healthy premenopausal women with and without sexual dysfunction: Part A. Serum androgen levels in women aged 20–49 years with no complaints of sexual dysfunction. Int J Impot Res 16, 112–120 (2004). https://doi.org/10.1038/sj.ijir.3901178
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DOI: https://doi.org/10.1038/sj.ijir.3901178
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