What are the reasons for male oligospermia?
Varicocele (5%)
"When varicocele occurs, the local temperature of the testis increases, and vasoactive substances increase, which affects testicular spermatogenesis. However, the degree of varicocele is not proportional to sperm quality.".
Cryptorchidism (35%)
Cryptorchidism refers to the absence of testicular descent to the scrotum, including testicular insufficiency and ectopic testicles. Clinically, the vast majority of cryptorchidism is characterized by testicular insufficiency. Cryptorchidism is one of the important factors affecting semen quality. About 60% of patients with unilateral cryptorchidism are infertile. Therefore, if sperm density is low and cryptorchidism exists, early treatment is necessary.
Endocrine factors (25%)
The human endocrine disorder, especially the hypothalamus, pituitary, testicle, the gonadal axis, system function disorder, which leads to the dysfunction of testicular spermatogenesis, will be manifested as oligospermia, even azoospermia, such as low gonadal hormone, which can lead to small testes, male characteristics are very poor, such as increased prolactin can also lead to oligospermia, such as thyroid disease, diabetes, etc, It also has a significant impact on the number of sperm.
Infection factors (10%)
Specific and nonspecific infections of the reproductive system can affect the occurrence of sperm, such as common prostatitis, seminal vesiculitis, epididymitis, and epididymal tuberculosis, which can lead to changes in the composition of semen, leading to a decrease in sperm count, or an increase in the number of abnormal sperm,
Environmental factors (5%)
Exposure to the environment due to work, such as exposure to radiation, work, and toxic substances, or high temperatures, also cause more sperm deaths and a decrease in sperm counts.