What causes male factor subfertility and infertility?

The cause of male factor infertility may not be known in some cases. In other cases, a man may become infertile because of problems with his reproductive system. The following are possible causes: Medicine: Steroids and medicines to treat high blood pressure, cancer, or depression, may affect male fertility.

Genetic: You may have been born with genes that cause infertility. A gene is a piece of DNA that tells your body what to do or what to make. The genes may affect how sperm are made (sperm production), how they move, and how well they can travel.

Immunologic: An immune system problem may cause antibodies to be produced that attack your sperm. The immune system is your body's defense system against infections and diseases. Infections: Chronic (long-term) infections in the male reproductive system may affect male fertility.

Low hormone levels: Hormone disorders in the testicles, or tumors in the pituitary gland, may cause subfertility. Sperm duct blockage: The seminal ducts are tubes ... more.

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