The WHO (World Health Organization) and ESHRE (European Society of Human Reproduction and Embryology) define a Sterile Couple as one that after a year of regular intercourse with the intention of having children without birth control do not achieve pregnancy.
It is considered that the peak of maximum fertility in both men and women is reached at about 24 years of age; from there, it starts to decrease in both sexes. The probability of conceiving in a normal couple is 25% in one month, 75% at 6 months, 90% at one year and 95% in two years. It is currently estimated that 20% of couples will present some form of infertility in their reproductive lives.
Currently the male component represents the most common cause of infertility, and it can be said that in more than half of couples with reproductive problems there is a male factor responsible.
More often than not, attention is not paid to this male factor in Reproduction. The indication of an In Vitro Fertilization Technique (IVF) means that in many cases it is often forgotten that the male factor may have treatment. In some cases treatment will manage to cure the patient (and perhaps IVF is not necessary), while in others it will improve the situation and, in any case, the quality of sperm will be improved and the reproduction technique will be easier and less costly (increasing the likelihood of pregnancy at the first IVF attempt). In all cases a male study can contribute something positive, especially if the cause is male.
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