Oligospermia is a medical condition characterized by a lower than normal sperm count in a man's semen. A healthy sperm count typically ranges from 15 million to over 200 million sperm per milliliter of semen. When a man has oligospermia, he may have fewer than 15 million sperm per milliliter, which can make it more challenging to conceive a child. Several factors can contribute to oligospermia, including lifestyle choices, hormonal imbalances, and certain medical conditions. Factors like excessive alcohol consumption, smoking, and obesity can negatively impact sperm production. If a couple is struggling to conceive, it may be helpful for the man to consult a healthcare professional for evaluation and potential treatment options related to oligospermia.