Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/43812
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Type: Journal article
Title: Testosterone and cognitive function in ageing men: Data from the Florey Adelaide Male Ageing Study (FAMAS)
Author: Martin, D.
Wittert, G.
Burns, N.
Haren, M.
Sugarman, R.
Citation: Maturitas, 2007; 57(2):182-194
Publisher: Elsevier Sci Ireland Ltd
Issue Date: 2007
ISSN: 0378-5122
1873-4111
Statement of
Responsibility: 
Donel M. Martin, Gary Wittert, Nicholas R. Burns, Matthew T. Haren and Roy Sugarman
Abstract: Objectives: Recent evidence suggests that declining testosterone levels in ageing males may be associated with both normal and pathological cognitive ageing. The aim of the present analyses was to investigate whether endogenous gonadal steroid levels in males mediate or moderate the associations between age and performance on neuropsychological measures of verbal memory, executive function, and processing speed. Methods: A cross-sectional analysis of the baseline data from 1046 community-dwelling men aged 35–80 years participating in the Florey Adelaide Male Ageing Study (FAMAS). Multiply adjusted analyses included participants’ history of medical conditions, anthropometric measurements, medication use, smoking status, alcohol use and mood. Hormone measurements included total testosterone (TT), bioavailable testosterone (BT), calculated free testosterone (cEFT), oestradiol (E2), sex hormone binding globulin (SHBG), follicle stimulating hormone (FSH), and lutenising hormone (LH). Neuropsychological tests included the Fuld Object Memory Evaluation (FOME), Trails A and Trails B. Results: In multiply adjusted analyses, higher cEFT and TT levels were associated with both poorer verbal memory and executive function performance and faster processing speed. cEFT levels were found to moderate the relationship between age and verbal memory performance quadratically and to mediate the relationship between age and processing speed. Conclusion: The results from this study suggest that higher levels of endogenous testosterone, particularly in the elderly, may have deleterious effects on cognitive functioning in men.
Keywords: Humans; Testosterone; Estradiol; Follicle Stimulating Hormone; Luteinizing Hormone; Sex Hormone-Binding Globulin; Cross-Sectional Studies; Cognition Disorders; Aging; Adult; Aged; Aged, 80 and over; Middle Aged; South Australia; Male
Rights: Copyright © 2007 Elsevier Ireland Ltd
RMID: 0020071220
DOI: 10.1016/j.maturitas.2006.12.007
Appears in Collections:Medicine publications

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