Aging in men is accompanied by a gradual decline of all physiologcal functions, involving
the heart, lungs, kidneys, liver and brain as well as the endocrine system. The …

The recent increase in the elderly population, current health trends and awareness of age-
related changes in the male endocrine system, have led to discussions about the role of the …

Partial androgen deficiency of the aging male is associated with symptoms collectively
accepted as the andropause syndrome. The underlying hormonal changes, the definition of …

In elderly women, after the menopause, which marks the end of reproductive life, estrogen
production and plasma levels represent only a small fraction of levels during reproductive …

IN CONTRAST to the situation in women, where the menopause marks the end of the fertile
period, in men fertility persists into old age. Nevertheless old age in men is accompanied by …

Aging is accompanied by a progressive decline of testicular function. Whereas fertility
persists until a very old age, endocrine function declines progressively and at age 70 yrs …

Background That there is an age-associated decrease in serum-testosterone concentrations
in healthy adult men has only been generally accepted within the past decade, which may …

For centuries, the importance of the testes for the maintenance of male phenotype,
psychosexual behavior, and physical power has been recognized. Indeed, testicular extracts …

To evaluate the hypothesis that endocrine profiles change with aging independently of
specific disease states, we examined the age trends of 17 major sex hormones, metabolites …

The physiology of aging in very old people is still poorly understood. A wide variety of age-
related factors confuse the interpretation of existing data, especially as regards the …