A number of risk factors are linked to low sperm count and other problems that can cause low sperm count. They include:

  • Smoking tobacco
  • Drinking alcohol
  • Using certain illegal drugs
  • Being overweight
  • Having certain past or present infections
  • Being exposed to toxins
  • Overheating the testicles
  • Having a prior vasectomy or vasectomy reversal
  • Being born with a fertility disorder or having a blood relative with a fertility disorder
  • Having certain medical conditions, including tumors and chronic illnesses
  • Undergoing cancer treatments, such as surgery or radiation
  • Taking certain medications
  • Performing prolonged activities such as bicycling or horseback riding, especially on a hard seat or poorly adjusted bicycle
Sep. 22, 2012