Andy PETROIANU* MD, PhD, Professor of Surgery
Department of Surgery of the School of Medicine of the Federal University of Minas Gerais, Belo Horizonte, BraziL
There is an established concept in society that men decrease their sexual activity with age and, if they are intellectual, this reduction occurs early. However, if men with the same health characteristics were studied, probably the results would be less unfavourable to the elderly.
The daily normal sperm density is (50 to 250) X 106 sperm/ml of seminal fluid and extragonadal spermatozoal reserve is from (500 to 1000) X 106, of which about 200 X 106 are available for ejaculation.
There are several factors that reduce spermatogenesis, including age, but the most fertile forms of spermatozoa and their motility reach their highest concentration between 40 and 50 years.
The minimal sperm count effective in fertilization is 20 X 106 sperm/ml semen, a value that can be found even after the age of 80 years.
Considering that semen is continuously produced, there is a natural desire for ejaculation, manifested by libido, regardless of age, ethnicity, social class and intellect, as long as there are no impeding factors.
Sexual dysfunctions result from emotional and psychic disorders, serious pelvic and systemic diseases, as well as complications from trauma, surgical treatments and radiotherapy. Sexual activities are natural and, like all other physiological aspects, are influenced by organic, mental, social, cultural and educational disorders.
Man, Sexual activity, Age, Sperm, Semen, Libido.
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