12 major causes of male infertility

　　1) Endocrine causes Gonadotropin deficiency is an endocrine male Main causes of infertility. Among them, it can be divided into Kallmann's syndrome, selective LH deficiency, selective FSH deficiency, pituitary tumor, adrenocortical hyperplasia, and hyperprolactinemia.

　　2) Environmental impact: Miners and boiler workers who overheat in the tunnel; underwear that is too tight; excessive smoking and drinking; and hypoxia can all affect fertility.……

　　3) Mental factors: Those who are overly stressed often cause infertility due to erection decline and infertility.

　　4) The mechanism of cryptorchidism causing male infertility is that the intra-abdominal temperature is higher than the scrotal temperature. sperm In addition to causing damage, unilateral cryptorchidism can also interfere with the spermatogenic function of the contralateral normal testicle.

　　5) Varicocele: Patients with varicocele present with poor semen quality, atrophy of the ipsilateral testis, and bilateral hypospermogenesis on testicular biopsy.

　　6) Vas deferens duct obstruction is another reversible cause of azoospermia. Characterized by azoospermia and normal testicular size.