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Endocrine Care |
New England Research Institutes (H.A.F., C.A.D., C.B.J., A.B.A., J.B.M.), Watertown, Massachusetts 02472; University of Massachusetts Medical School (C.L.), Worcester, Massachusetts 01655; and University of Washington Medical School (A.D.C., W.J.B.), Seattle, Washington 98195
Address all correspondence and requests for reprints to: John B. McKinlay, Ph.D., New England Research Institutes, 9 Galen Street, Watertown, Massachusetts 02472. E-mail: johnm{at}neri.org
Abstract
We used longitudinal data from the Massachusetts Male Aging Study, a large population-based random-sample cohort of men aged 4070 yr at baseline, to establish normative age trends for serum level of T and related hormones in middle-aged men and to test whether general health status affected the age trends. Of 1,709 men enrolled in 19871989, 1,156 were followed up 710 yr afterward. By repeated-measures statistical analysis, we estimated simultaneously the cross-sectional age trend of each hormone between subjects within the baseline data, the cross-sectional trend between subjects within the follow-up data, and the longitudinal trend within subjects between baseline and follow-up.
Total T declined cross-sectionally at 0.8%/yr of age within the follow-up data, whereas both free and albumin-bound T declined at about 2%/yr, all significantly more steeply than within the baseline data. Sex hormone-binding globulin increased cross-sectionally at 1.6%/yr in the follow-up data, similarly to baseline. The longitudinal decline within subjects between baseline and follow-up was considerably steeper than the cross-sectional trend within measurement times for total T (1.6%/yr) and bioavailable T (23%/yr). Dehydroepiandrosterone, dehydroepiandrosterone sulfate, cortisol, and estrone showed significant longitudinal declines, whereas dihydrotestosterone, pituitary gonadotropins, and PRL rose longitudinally.
Apparent good health, defined as absence of chronic illness, prescription medication, obesity, or excessive drinking, added 1015% to the level of several androgens and attenuated the cross-sectional trends in T and LH but did not otherwise affect longitudinal or cross-sectional trends.
The paradoxical finding that longitudinal age trends were steeper than cross-sectional trends suggests that incident poor health may accelerate the age-related decline in androgen levels.
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D. M. de Kretser Is Spermatogenic Damage Associated with Leydig Cell Dysfunction? J. Clin. Endocrinol. Metab., July 1, 2004; 89(7): 3158 - 3160. [Full Text] [PDF] |
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C. Meier, P. Y. Liu, L. P. Ly, J. de Winter-Modzelewski, M. Jimenez, D. J. Handelsman, and M. J. Seibel Recombinant Human Chorionic Gonadotropin But Not Dihydrotestosterone Alone Stimulates Osteoblastic Collagen Synthesis in Older Men with Partial Age-Related Androgen Deficiency J. Clin. Endocrinol. Metab., June 1, 2004; 89(6): 3033 - 3041. [Abstract] [Full Text] [PDF] |
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S. Asthana, S. Bhasin, R. N. Butler, H. Fillit, J. Finkelstein, S. M. Harman, L. Holstein, S. G. Korenman, A. M. Matsumoto, J. E. Morley, et al. Masculine Vitality: Pros and Cons of Testosterone in Treating the Andropause J. Gerontol. A Biol. Sci. Med. Sci., May 1, 2004; 59(5): M461 - M465. [Full Text] [PDF] |
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A. Hestiantoro and D. F. Swaab Changes in Estrogen Receptor-{alpha} and -{beta} in the Infundibular Nucleus of the Human Hypothalamus Are Related to the Occurrence of Alzheimer's Disease Neuropathology J. Clin. Endocrinol. Metab., April 1, 2004; 89(4): 1912 - 1925. [Abstract] [Full Text] [PDF] |
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B. Z. Leder, J. L. Rohrer, S. D. Rubin, J. Gallo, and C. Longcope Effects of Aromatase Inhibition in Elderly Men with Low or Borderline-Low Serum Testosterone Levels J. Clin. Endocrinol. Metab., March 1, 2004; 89(3): 1174 - 1180. [Abstract] [Full Text] [PDF] |
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J. K. Amory, N. B. Watts, K. A. Easley, P. R. Sutton, B. D. Anawalt, A. M. Matsumoto, W. J. Bremner, and J. L. Tenover Exogenous Testosterone or Testosterone with Finasteride Increases Bone Mineral Density in Older Men with Low Serum Testosterone J. Clin. Endocrinol. Metab., February 1, 2004; 89(2): 503 - 510. [Abstract] [Full Text] [PDF] |
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V. W. Henderson and E. Hogervorst Testosterone and Alzheimer disease: Is it men's turn now? Neurology, January 27, 2004; 62(2): 170 - 171. [Full Text] [PDF] |
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P. Szulc, B. Claustrat, F. Marchand, and P. D. Delmas Increased Risk of Falls and Increased Bone Resorption in Elderly Men with Partial Androgen Deficiency: The MINOS Study J. Clin. Endocrinol. Metab., November 1, 2003; 88(11): 5240 - 5247. [Abstract] [Full Text] [PDF] |
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S. Bhasin Testosterone Supplementation for Aging-Associated Sarcopenia J. Gerontol. A Biol. Sci. Med. Sci., November 1, 2003; 58(11): M1002 - 1008. [Abstract] [Full Text] [PDF] |
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R. Luboshitzky, Z. Shen-Orr, and P. Herer Middle-Aged Men Secrete Less Testosterone at Night Than Young Healthy Men J. Clin. Endocrinol. Metab., July 1, 2003; 88(7): 3160 - 3166. [Abstract] [Full Text] [PDF] |
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J. E. Morley The Need for a Men's Health Initiative J. Gerontol. A Biol. Sci. Med. Sci., July 1, 2003; 58(7): M614 - 617. [Full Text] [PDF] |
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D. L. Waters, C. L. Yau, G. D. Montoya, and R. N. Baumgartner Serum Sex Hormones, IGF-1, and IGFBP3 Exert a Sexually Dimorphic Effect on Lean Body Mass in Aging J. Gerontol. A Biol. Sci. Med. Sci., July 1, 2003; 58(7): M648 - 652. [Abstract] [Full Text] [PDF] |
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J. E. Morley Anorexia and Weight Loss in Older Persons J. Gerontol. A Biol. Sci. Med. Sci., February 1, 2003; 58(2): M131 - 137. [Full Text] [PDF] |
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A. Colao, C. Di Somma, S. Spiezia, M. Filippella, R. Pivonello, and G. Lombardi Effect of Growth Hormone (GH) and/or Testosterone Replacement on the Prostate in GH-Deficient Adult Patients J. Clin. Endocrinol. Metab., January 1, 2003; 88(1): 88 - 94. [Abstract] [Full Text] [PDF] |
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R. Luboshitzky, A. Aviv, A. Hefetz, P. Herer, Z. Shen-Orr, L. Lavie, and P. Lavie Decreased Pituitary-Gonadal Secretion in Men with Obstructive Sleep Apnea J. Clin. Endocrinol. Metab., July 1, 2002; 87(7): 3394 - 3398. [Abstract] [Full Text] [PDF] |
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