Diabetes mellitus is a global epidemic characterized by high incidence and mortality rates. It can lead to both acute and chronic systemic complications. Diabetes-induced male reproductive disorders have become a focal point of concern. Numerous studies have shown that hyperglycemia can impair male fertility through various pathways, including erectile and ejaculatory dysfunction, disruption of the hypothalamic-pituitary-gonadal axis, damage to the epididymis and testis, impaired semen quality, abnormalities in testicular and sperm glucose metabolism, and adverse effects on offspring health. The mechanisms involved include oxidative stress, inflammation, autophagy, apoptosis, epigenetic regulation, and mitochondrial damage. Interventions for male fertility impairment include diabetes treatment drugs, antioxidants, Traditional Chinese Medicine and acupuncture, mesenchymal stem cell therapy, exercise and physical training, as well as gut microbiota interventions. This article aims to review the current research on the relationship between diabetes and male fertility, explore the underlying mechanisms leading to male infertility, and identify potential interventions to improve male reproductive health, which holds significant clinical value.

Diabetes mellitus is a global epidemic characterized by high incidence and mortality rates. It can lead to both acute and chronic systemic complications. Diabetes-induced male reproductive disorders have become a focal point of concern. Numerous studies have shown that hyperglycemia can impair male fertility through various pathways, including erectile and ejaculatory dysfunction, disruption of the hypothalamic-pituitary-gonadal axis, damage to the epididymis and testis, impaired semen quality, abnormalities in testicular and sperm glucose metabolism, and adverse effects on offspring health. The mechanisms involved include oxidative stress, inflammation, autophagy, apoptosis, epigenetic regulation, and mitochondrial damage. Interventions for male fertility impairment include diabetes treatment drugs, antioxidants, Traditional Chinese Medicine and acupuncture, mesenchymal stem cell therapy, exercise and physical training, as well as gut microbiota interventions. This article aims to review the current research on the relationship between diabetes and male fertility, explore the underlying mechanisms leading to male infertility, and identify potential interventions to improve male reproductive health, which holds significant clinical value.