The Evolution of Male Infertility
According to the current criteria, a normal male has more than 15 million sperm cells in 1 ml of sperm. Sperm cell count can be lower, which decreases the chance of conceiving from a sexual intercourse. In 1938, the male’s average sperm contained 120 million/ml sperm cells. Scientific studies from 1952 show average values of only 73. 4 million/ml. Similar studies from 1972 show only 54. 4 million/ml.
Sperm quality has been decreasing very rapidly in the last decade, especially in industrial countries. US experts are suggesting a 1. 5% decrease each year. The data also show declining trend of male fertility in developed countries. Assisted reproduction (in-vitro fertilization, IVF), most commonly the Intra Cytoplasmic Sperm Injection (ICSI) method or its modifications (IMSI, PCSI), is the most widely used treatment method in cases of infertility caused by low sperm count or quality.
The Evolution of Male Infertility
Main Causes of Male Infertility
Additional male examinations include
Sexual Dysfunction