Sexually transmitted infections are more common that you may think. A recent report from the CDC shows that STIs are a growing problem with a record number of new infections reported in 2013. Learn the facts and how to stay safe. What is a white blood cell and why does your semen analysis measure white blood cell concentration? If sperm cells are the quarterbacks of baby-making, white blood cells are like your offensive linemen. Any sickness that causes a prolonged high fever can temporarily reduce male fertility by damaging sperm production. For ordinary illnesses, sperm count typically rebounds to normal levels in a couple months. Certain infections can [...]