There are many reasons for dead sperm disease, mainly including the following:
1. The lack of fructose, which is essential for sperm survival in semen, is an extremely important substance to ensure sperm survival and activity. For example, when there is inflammation in the vas deferens, the fructose in normal seminal vesicle fluid will decrease and affect the survival of some sperm.
2. The pH of semen changes from 7.2 to 8.9, which is slightly alkaline. The pH value of semen in patients with necrospermia is lower than 7.2, and the acidity of semen is higher, which may be the cause of sperm death, while the decrease of semen pH is related to inflammatory diseases of reproductive organs, because bacterial metabolites can cause the decrease of semen pH value.
3. When there is inflammation in the reproductive organs due to insufficient oxygen supply, congestion, edema, blood stasis and slow blood circulation will occur, resulting in the reduction of oxygen provided by blood, and sperm will die due to hypoxia.
4. The normal content of zinc in semen should be 80~25? G/mL, and when prostatitis occurs, the zinc content in semen can be reduced to 50? Below g/mL, sperm is easy to die.
5. High temperature, radiation and other physical factors can reduce the survival rate of sperm and cause life-and-death sperm disease due to local high temperature or local exposure to high-dose radiation, or long-term exposure to radiation.
6. Drug factors: taking drugs that can damage sperm, such as tripterygium wilfordii, cyclophosphamide, etc., can cause sperm death.