Oligozoospermia is a medical condition characterized by a low sperm count in a man's semen. Specifically, it is defined as having fewer than 15 million sperm per milliliter of semen. This condition can affect fertility, making it more challenging for couples to conceive naturally. Several factors can contribute to oligozoospermia, including hormonal imbalances, genetic issues, and environmental influences. Lifestyle choices, such as smoking and excessive alcohol consumption, may also play a role. Diagnosis typically involves a semen analysis, and treatment options may include lifestyle changes, medications, or assisted reproductive technologies like in vitro fertilization (IVF).