Endocrine Abstracts

In men, aging is associated with a gradual and progressive decline in serum testosterone (T) levels, such that an increasing proportion of aging men have T levels below the normal range in young men, i.e. in the hypogonadal range. The age-related de-cline T levels is associated with alterations in body composition (decreasing lean and increasing fat mass), decreases in muscle mass and strength, bone mineral density (BMD), sexual function, and cognitive function, and depressed ...