Male Infertility

To evaluate the impact of male age and male factor infertility on embryo suitability for transfer in IVF cycles in which female factor is controlled.

The national SART Clinic Outcome Reporting System (SART CORS) cycle data was used to evaluate the impact of male age and male factor infertility diagnosis on embryo suitability for transfer in cycles using non-identified donor oocytes.

Testicular disorders, including male infertility and hypogonadism, are increasingly prevalent and current diagnostic tools have important limitations. The testicular microcirculation underpins testicular function.

Male infertility, particularly severe oligozoospermia, presents a significant challenge in reproductive health, often associated with high oxidative stress and poor lifestyle practices. This case report highlights the potential therapeutic role of a structured yoga regimen in improving semen quality, reducing stress, and enhancing quality of life in a male with long-standing infertility.

Nonobstructive azoospermia (NOA) is the most severe form of male infertility, with genetic factors contributing to approximately 30% of cases. However, only a small fraction of all NOA cases can be explained by the current genetic findings.

Male infertility affects approximately 10% of men globally, yet approximately 70% of cases lack a definitive genetic diagnosis. Next-generation sequencing has identified numerous monogenic causes, many of which are linked to broader systemic conditions.

Spermatogenesis is a highly energy-dependent and tightly regulated differentiation process in the male reproductive system, characterized by dynamic, stage-specific metabolic adaptations during spermatogonial proliferation, meiosis and sperm maturation.

Sperm microbiota originates from local (urogenital, intestinal, cutaneous) and partner microbiomes, influenced by sexual activity. Its composition and diversity may impact male fertility, but research remains limited.

Male factors account for approximately 50% of infertility cases; however, the mechanisms underlying sperm dysfunction remain unclear. Heat shock protein A2 (HSPA2) is a biomarker associated with sperm fertilization; however, few studies have examined changes in its localization in vitro.

Male infertility remains a significant global challenge, with bacteriospermia increasingly recognized as a contributor to impaired reproductive function. Emerging evidence suggests that bacterial infections may induce sperm DNA fragmentation.

Endocrine-disrupting chemicals affect nearly every human on the planet and are known to interfere with reproduction. Most studies have focused on gestational exposure effects in females. Emerging evidence indicates that preconception exposures in males can also impact pregnancy outcomes and offspring health.