Longitudinal Effects of Aging on Serum Total and Free Testosterone Levels in Healthy Me... - 0 views
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NUMEROUS CROSS-SECTIONAL INVESTIGATIONS have demonstrated lower concentrations of circulating testosterone (T) and/or free T in older men
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Two small-scale longitudinal investigations have observed decreases, with aging, in total T
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T levels decline at a more or less constant rate, with age, in men, with no period of accelerated decline
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Article highlights the problems with the definition of low T. This article finds consistent decline in Total Testosterone and FAI with increasing age groups, with a significant portion of men > 60 meeting the required levels for "low T". This study found a decrease in total T and FAI at a consistent rate independent of variables, such as BMI. This study did find a decrease in SHBG and total T with obesity; in contrast to other studies.