What are the specific causes of male infertility?

Patient's question:

Prepared to get pregnant for a year but didn't conceive, my wife is fine, my sperm vitality is very poor, please ask what are the specific causes of male infertility

Doctor's answer:

Etiology of Male Infertility:
1. Age factors
2. Environmental factors
3. Personal behavior: Poor behavioral habits are also important causes of infertility. Examples include smoking, drug abuse, chronic alcoholism, poor deep sleep habits, and a history of promiscuity.
4. Diseases: Spermatogenesis dysfunction caused by conditions such as undescended testes, varicocele, mumps, chromosomal abnormalities, toxic drugs; epididymitis, seminal vesiculitis, or prostatitis; and urethritis caused by infections like gonorrhea, syphilis, chlamydia, or mycoplasma.
For your health, if you suffer from this condition, please seek timely treatment at a formal and professional fertility hospital.