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 …

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 concentration of sex and gonadotropic hormones in blood plasma of 280 reasonably
healthy men aged 20–105 was determined using radioimmunoassay kits. Compared to men …

Publisher Summary This chapter discusses gonadotropins and plasma testosterone in
senescence. An investigation described in the chapter showed that the testis was capable of …

Alterations of sexual hormones in plasma of ageing males occur between the 50th and 60th
year of life with individual variations: 1. Decreased values of testosterone in plasma and a …

It is known that age exerts profound influences on the endocrine system both in
experimental animals and in humans. Particularly relevant are the age-linked effects …

During male ageing serum levels of testosterone, free testosterone, DHEA, growth hormone
and maltonin decrease in contrary to the increase of FSH, LH, SHBG. Estradiol, Prolaktin …

The influence of aging on serum levels of gonadotropins (FSH and LH), testosterone and
estradiol was studied in the following groups: 4 normal men (ages 30 to 50), 38 men with …

In order to investigate their pattern of change with age, free testosterone concentration
(FTC), testosterone (T), androstenedione (A) and testosterone-estrogenbinding globulin …

Scientists have been interested in sex hormones and their role in the aging male since the
19th century, when Brown-Sequard, the famous French physiologist, described his …