Waist-to-height ratio as a predictor of serum testosterone in ageing men with symptoms of androgen deficiency

The decline in serum testosterone in ageing men may be mediated in part by obesity; however, it is uncertain which measure of adiposity is most closely associated with testosterone levels. We have examined the relationships of age, adiposity and testosterone levels in ageing men with symptoms consis...

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Bibliographic Details
Published in:Asian journal of andrology 2011-05, Vol.13 (3), p.424-431
Main Authors: Allan, Carolyn A, Peverill, Roger E, Strauss, Boyd Jg, Forbes, Elise A, McLachlan, Robert I
Format: Article
Language:English
Subjects:
Adiposity
Aged, 80 and over
Aging - blood
Androgens - deficiency
Body Height
Body Mass Index
Body Weight
Cross-Sectional Studies
Humans
Luteinizing Hormone - blood
Male
Middle Aged
Original
Sex Hormone-Binding Globulin - analysis
Testosterone - blood
Waist Circumference
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Summary:The decline in serum testosterone in ageing men may be mediated in part by obesity; however, it is uncertain which measure of adiposity is most closely associated with testosterone levels. We have examined the relationships of age, adiposity and testosterone levels in ageing men with symptoms consistent with hypoandrogenism but who were otherwise in good health. We conducted a cross-sectional study of non-smoking men aged ≥ 54 years recruited from the community and who were free of cancer or serious medical illness. Height (Ht), weight and waist circumference (WC) were measured, and body mass index (BMI) and waist-to-height (WHt) ratio were calculated. Two morning blood samples were collected for measurement of total testosterone (TT), sex hormone binding globulin (SHBG) and luteinizing hormone (LH). Free testosterone (cFT) was calculated. Multivariate linear regression analysis was performed to assess their relationship with measures of adiposity. Two hundred and seven men aged 54-86 years were studied. On univariate analysis WHt ratio was more strongly correlated with TT and cFT than either WC or BMI. Furthermore, in models of TT and cFT, the addition of Ht to WC resulted in an increase in the magnitude of the regression coefficients for both WC (inverse correlate) and Ht (positive correlate), with the contributions of both WC and Ht both being significant (P
ISSN:1008-682X
1745-7262
DOI:10.1038/aja.2011.13