Journal
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM
Volume 99, Issue 6, Pages 2061-2068Publisher
ENDOCRINE SOC
DOI: 10.1210/jc.2013-3576
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Funding
- VA Research Service
- VA Epidemiology Research and Information Center
- VA Geriatric Research, Education and Clinical Center
- NIH [1R01HL091952]
- National Heart, Lung, and Blood Institute [HHSN268201200036C, N01-HC-85239, N01 HC-55222, N01-HC-85079, N01-HC-85080, N01-HC-85081, N01-HC-85082, N01-HC-85083, N01-HC85086, HL080295]
- National Institute on Aging [AG-023629]
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Context: Low testosterone (T) is associated with prevalent cardiovascular disease (CVD) and mortality. DHT, a more potent androgen, may also be associated with CVD and mortality, but few studies have examined this. Objective: The study objective was to examine whether T and DHT are risk factors for incident CVD and mortality. Design: In a longitudinal cohort study, we evaluated whether total T, calculated free T (cFT), DHT, and calculated free DHT were associated with incident CVD and mortality in men in the Cardiovascular Health Study (mean age 76, range 66-97 years) who were free of CVD at the time of blood collection. Main Outcome: The main outcomes were incident CVD and all-cause mortality. Results: Among 1032 men followed for a median of 9 years, 436 incident CVD events and 777 deaths occurred. In models adjusted for cardiovascular risk factors, total T and cFT were not associated with incident CVD or all-cause mortality, whereas DHT and calculated free DHT had curvilinear associations with incident CVD (P < .002 and P = .04, respectively) and all-cause mortality (P < .001 for both). Conclusions: In a cohort of elderly men, DHT and calculated free DHT were associated with incident CVD and all-cause mortality. Further studies are needed to confirm these results and to clarify the underlying physiologic mechanisms.
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