Male infertility is a medical condition in which a man has difficulty contributing to conception with his partner after at least one year of regular, unprotected intercourse. It is estimated that male factors contribute to approximately 40–50 percent of infertility cases worldwide.
One of the most common causes of male infertility is poor sperm quality. Healthy sperm must be present in adequate numbers, have a normal structure, and possess the ability to move efficiently toward the egg. Problems with any of these characteristics can reduce fertility.
Low sperm count, also known as oligospermia, is one of the primary causes of infertility. In severe cases, a condition called azoospermia may occur, where no sperm cells are present in the semen. Other conditions that can affect sperm quality include reduced motility (asthenozoospermia) and abnormal sperm morphology.
Hormonal imbalances may also contribute to infertility. Hormones such as testosterone, follicle-stimulating hormone (FSH), and luteinizing hormone (LH) play essential roles in sperm production. Disruptions in these hormones can impair reproductive function.
In addition, structural abnormalities in the male reproductive system can interfere with fertility. Conditions such as varicocele, blocked sperm ducts, or congenital defects may prevent sperm from reaching the semen.
Diagnosis of male infertility usually begins with a semen analysis. This laboratory test evaluates sperm count, motility, and morphology. Additional tests may include hormonal evaluations, genetic testing, and imaging studies.
Treatment depends on the underlying cause of infertility. Lifestyle modifications, hormone therapy, medications, surgical correction of structural abnormalities, and assisted reproductive technologies may all be used to improve fertility erotic outcomes.