The cause of disease exists little sperm

The cause of disease less sperm less sperm disease is the number of sperm semen below the normal healthy fertile man. Because the recent years human sperm quality of the environment, such as Daniel estrogen of toxic pollution and other factors to drop. Less refined disease is to point to sperm density less than 20 million/ml person for less refined disease. General will be less refined disease is divided into idiopathic less refined disease, primary less refined) and secondary less refined disease. Idiopathic less refined accounted for 11% of the population in infertility from 15% to.

Now think that sperm less refined the cause of disease:

1. Reduce idiopathic sperm

Long-term a large injection of androgens, due to the negative feedback action to make the hypothalamus gonadotropin release hormones to reduce gonadotropins secretion is reduced, cause sperm to reduce or lack of.

2. Drug effects

Can be directly or indirectly affect sperm production, such as sulfa drugs, furan, Tampa, cyclophosphamide, ammonia a butterfly moans, autumn narcissus alkali.

3. Radiation exposure

To childish cells, including the most sensitive born fine epithelium, can make the sperm cell division hysteresis or stop, or cause irreversible damage.

4. Other

Alcohol poisoning, smoke too much, drugs, all can inhibit sperm production; Chronic prostatitis, varicocele, etc all can inhibit sperm production