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Age-associated changes in hypothalamic-pituitary-testicular function in middle-aged and older men are modified by weight change and lifestyle factors: longitudinal results from the European Male Ageing Study

Camacho, E. M.; Huhtaniemi, I. T.; O'Neill, T. W.; Finn, J. D.; Pye, S. R.; Lee, D. M.; Tajar, A.; Bartfai, G.; Boonen, S. and Casanueva, F. F., et al. (2013) In European Journal of Endocrinology 168(3). p.445-455
Abstract
Objective: Health and lifestyle factors are associated with variations in serum testosterone levels in ageing men. However, it remains unclear how age-related changes in testosterone may be attenuated by lifestyle modifications. The objective was to investigate the longitudinal relationships between changes in health and lifestyle factors with changes in hormones of the reproductive endocrine axis in ageing men. Design: A longitudinal survey of 2736 community-dwelling men aged 40-79 years at baseline recruited from eight centres across Europe. Follow-up assessment occurred mean (+/- S.D.) 4.4 +/- 0.3 years later. Results: Paired testosterone results were available for 2395 men. Mean (+/- S.D.) annualised hormone changes were as follows:... (More)
Objective: Health and lifestyle factors are associated with variations in serum testosterone levels in ageing men. However, it remains unclear how age-related changes in testosterone may be attenuated by lifestyle modifications. The objective was to investigate the longitudinal relationships between changes in health and lifestyle factors with changes in hormones of the reproductive endocrine axis in ageing men. Design: A longitudinal survey of 2736 community-dwelling men aged 40-79 years at baseline recruited from eight centres across Europe. Follow-up assessment occurred mean (+/- S.D.) 4.4 +/- 0.3 years later. Results: Paired testosterone results were available for 2395 men. Mean (+/- S.D.) annualised hormone changes were as follows: testosterone -0.1 +/- 0.95 nmol/l; free testosterone (FT) -3.83 +/- 16.8 pmol/l; sex hormone-binding globulin (SHBG) 0.56 +/- 2.5 nmol/l and LH 0.08 +/- 0.57 U/l. Weight loss was associated with a proportional increase, and weight gain a proportional decrease, in testosterone and SHBG. FT showed a curvilinear relationship to weight change; only those who gained or lost >= 15% of weight showed a significant change (in the same direction as testosterone). Smoking cessation was associated with a greater decline in testosterone than being a non-smoker, which was unrelated to weight change. Changes in number of comorbid conditions or physical activity were not associated with significant alterations in hypothalamic-pituitary-testicular (HPT) axis function. Conclusions: Body weight and lifestyle factors influence HPT axis function in ageing. Weight loss was associated with a rise, and weight gain a fall, in testosterone, FT and SHBG. Weight management appears to be important in maintaining circulating testosterone in ageing men, and obesity-associated changes in HPT axis hormones are reversible following weight reduction. European Journal of Endocrinology 168 445-455 (Less)
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European Journal of Endocrinology
volume
168
issue
3
pages
445 - 455
publisher
Society of the European Journal of Endocrinology
external identifiers
  • wos:000316443000022
  • scopus:84875863886
ISSN
1479-683X
DOI
10.1530/EJE-12-0890
language
English
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yes
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c8e66ff0-528f-44fe-a9aa-8554dabec2ce (old id 3765161)
date added to LUP
2013-06-03 08:41:04
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2019-10-16 01:05:44
@article{c8e66ff0-528f-44fe-a9aa-8554dabec2ce,
  abstract     = {Objective: Health and lifestyle factors are associated with variations in serum testosterone levels in ageing men. However, it remains unclear how age-related changes in testosterone may be attenuated by lifestyle modifications. The objective was to investigate the longitudinal relationships between changes in health and lifestyle factors with changes in hormones of the reproductive endocrine axis in ageing men. Design: A longitudinal survey of 2736 community-dwelling men aged 40-79 years at baseline recruited from eight centres across Europe. Follow-up assessment occurred mean (+/- S.D.) 4.4 +/- 0.3 years later. Results: Paired testosterone results were available for 2395 men. Mean (+/- S.D.) annualised hormone changes were as follows: testosterone -0.1 +/- 0.95 nmol/l; free testosterone (FT) -3.83 +/- 16.8 pmol/l; sex hormone-binding globulin (SHBG) 0.56 +/- 2.5 nmol/l and LH 0.08 +/- 0.57 U/l. Weight loss was associated with a proportional increase, and weight gain a proportional decrease, in testosterone and SHBG. FT showed a curvilinear relationship to weight change; only those who gained or lost >= 15% of weight showed a significant change (in the same direction as testosterone). Smoking cessation was associated with a greater decline in testosterone than being a non-smoker, which was unrelated to weight change. Changes in number of comorbid conditions or physical activity were not associated with significant alterations in hypothalamic-pituitary-testicular (HPT) axis function. Conclusions: Body weight and lifestyle factors influence HPT axis function in ageing. Weight loss was associated with a rise, and weight gain a fall, in testosterone, FT and SHBG. Weight management appears to be important in maintaining circulating testosterone in ageing men, and obesity-associated changes in HPT axis hormones are reversible following weight reduction. European Journal of Endocrinology 168 445-455},
  author       = {Camacho, E. M. and Huhtaniemi, I. T. and O'Neill, T. W. and Finn, J. D. and Pye, S. R. and Lee, D. M. and Tajar, A. and Bartfai, G. and Boonen, S. and Casanueva, F. F. and Forti, G. and Giwercman, Aleksander and Han, T. S. and Kula, K. and Keevil, B. and Lean, M. E. and Pendleton, N. and Punab, M. and Vanderschueren, D. and Wu, F. C. W.},
  issn         = {1479-683X},
  language     = {eng},
  number       = {3},
  pages        = {445--455},
  publisher    = {Society of the European Journal of Endocrinology},
  series       = {European Journal of Endocrinology},
  title        = {Age-associated changes in hypothalamic-pituitary-testicular function in middle-aged and older men are modified by weight change and lifestyle factors: longitudinal results from the European Male Ageing Study},
  url          = {http://dx.doi.org/10.1530/EJE-12-0890},
  volume       = {168},
  year         = {2013},
}