What factors can lead to male infertility

Patient's question:

What factors can lead to male infertility, which diseases in the male reproductive system can affect male fertility

Doctor's answer:

Testicular disorders: Cryptorchidism, hormonal secretion problems, or external force impact may cause them.
Testicular torsion: Congenital long spermatic cord of the suspended testicle may lead to cord torsion in cold temperatures, obstructing blood flow to the testicular artery and affecting sperm production function. Recommended reading: What are the symptoms of male infertility?
Genital tract infection: Genital tract infections can alter the liquefaction time of semen. Any reason leading to the obstruction of prostate secretion function can cause a lack of liquefaction factors in semen, resulting in semen non-liquefaction syndrome.
Vas deferens obstruction: Although there are normal testicles and the ability to produce sperm, congenital defects in the vas deferens prevent the smooth delivery of sperm, making it impossible to conceive. Recommended reading: What tests are needed for male infertility diagnosis.