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Beneficial effects of testosterone for frailty in older men are short-lived
Date:11/4/2010

Chevy Chase, MDThe beneficial effects of six months of testosterone treatment on muscle mass, strength and quality of life in frail elderly men are not maintained at six months post-treatment, according to a study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM).

Frailty is an age-related state of physical limitation caused by the loss of muscle mass and function and can lead to adverse clinical outcomes such as dependency, institutionalization and death. Testosterone levels naturally decline with aging and testosterone replacement is a common therapy. Short-term testosterone treatment in frail elderly men has been shown to improve muscle mass and strength, but until now it has been unclear whether these effects could be maintained post-treatment.

"Since the use of testosterone in elderly men raises concerns regarding adverse effects on the prostate and cardiovascular system, it's important to determine if short-term treatment can lead to prolonged benefits beyond the duration of testosterone exposure," said Frederick Wu, MD, of the University of Manchester in the United Kingdom and lead author of the study. "Our findings suggest it may not be possible to break or interrupt the cycle of decline in physical function in frailty by short-term anabolic pharmacological intervention using testosterone supplementation for six months."

In this study, researchers evaluated 274 intermediate-frail and frail elderly men aged 65-90 years with low testosterone levels. Study participants received either a testosterone gel or placebo for six months. Assessments were carried out at baseline, the end of treatment and six months after treatment cessation. Researchers found that the increased lean body mass, muscle strength and quality of life after six months of testosterone treatment were not maintained six months after treatment.

"At present, the optimal duration of anabolic hormonal intervention to produce sustained benefits in treating frailty in older men is unknown," said Wu. "To best interrupt the downward spiral into frailty a greater emphasis should be placed on a multi-disciplinary interventional approach including resistance exercise, diet and other lifestyle options, in conjunction with pharmacological agents."


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Contact: Aaron Lohr
alohr@endo-society.org
240-482-1380
The Endocrine Society
Source:Eurekalert

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