The causes of infertility caused by varicocele have not been fully elucidated yet, and may be related to the following factors.
1, blood retention in the spermatic vein, which increases the local temperature of the testis and degeneration of the spermatogenic tubules affects the occurrence of sperm; Li Weiren, Department of Urology, Beijing Aerospace General Hospital
2, blood stagnation affects testicular blood circulation and CO2 accumulation in testicular tissue affects spermatogenesis.
3, left spermatic vein reflux to the renal vein blood, will adrenal and renal secretion of metabolites such as steroids, catecholamines, 5-hydroxytryptamine can cause vasoconstriction, resulting in premature sperm shedding;.
4, varicocele on the left side can affect the right testicular function, because there are rich traffic branches of the veins between the testicles bilaterally, the toxins in the blood of the left spermatic vein can affect the spermatogenesis of the right testicle.