Unlike past times, when every fertility problem was thought to be because of the woman, we know today that men can also have sperm disorders that difficult fecundation.
In some occasions, the few, this problems are due to non changeable genetic alterations that stop the sperm production and make a man fertile, or pathologies like cystic fibrosis that decrease fertility.
Always that a pregnancy is being looked for and before starting an assisted reproduction treatment, the male factor must be discard.
For that, a seminogram is performed, a test used to evaluate the characteristics of the sperms. Even though that the results of this test may let you down, the good news are that this factors are not a sentence, are not irresolvable: changing the hormonal scenario needed, it is possible to modify fully the seminogram results in three months.