The truth is that, after a detailed study of the individual case, we are sometimes unable to make an aetiological diagnosis. That is, we do not determine the cause of the miscarriages. It is important to note that in couples with repeated miscarriages in which the cause of the miscarriages is not found, the probability of a subsequent full-term pregnancy is greater than 50%.
Among the most common causes of repeat miscarriages are genetic causes and the so-called primary antiphospholipid syndrome.
However, recent studies point to a possible male factor as the origin of repeat miscarriages. In recent years, semen quality has declined, largely due to stress, long working hours, environmental pollution, exposure to heat, alcohol and tobacco, poor eating habits and even the use of tight underwear.
Tests are available to identify chromosomal alterations in semen samples.
