Common causes of male infertility:
The most common culprit will be a sperm disorder, such as low sperm count, slow sperm motility, or a deficiency in forward progression (the sperm’s quality of movement). And any of these problems could be caused by a variety of factors. Here are some of the main ones to keep in mind though:
AGE – his sperm count may not decrease but it starts to lose motility around age 40.
IMMUNE PROBLEMS – this can also impact on motility and the sperm’s ability to implant itself in your egg.
WEIGHT ISSUES – if he is underweight or overweight, this may be taking a toll on his sperm function.
STDs – untreated STDs could impact on sperm transportation, however, this can be significantly improved if he seeks treatment.