In 30% of cases infertility is due to masculine causes: alterations in the testicular area, obstruction of tubes, prostate pathologies, problems with ejaculation or erectile function or alterations in the semen.
In another 30% of cases it is due to feminine causes such as early menopause, endometriosis, obstructions or lesions in the Fallopian tubes, uterine or cervical anomalies or ovulation problems.
In 20% of cases there is a mixture or a combination of causes in which both parties are responsible. We always prefer to refer to the causes or reasons of the couple as a whole because, whatever the problem, the cooperation of both parties is fundamental.
Twenty per cent of cases are due to unexplained causes. This does not mean there is no reason that explains the sterility, but that it has not been possible to identify the cause.