When a man's A-level sperm is less than 25% and A+B is less than 50%, then this man is considered to have weak sperm. In this case, on the one hand, it is difficult to conceive, and on the other hand, the fertilized egg after conception is prone to adverse pregnancy and childbirth. So, what is the cause of male weak sperm?
1. Reproductive system infection
When there are infections in the male reproductive system, such as acute and chronic inflammation in organs such as the epididymis, vas deferens, seminal vesicles, and prostate gland, sperm activity also significantly decreases. If there are white blood cells or poor liquefaction in men's semen on routine tests, inflammation of the reproductive system may be one of the important reasons.
Inflammatory infections can have multiple effects on sperm motility. The direct effect of pathogenic microorganisms on sperm, such as mycoplasma, can adsorb on the head, middle section, and tail of sperm, causing increased hydrodynamic resistance and slower movement speed during forward movement of sperm, affecting sperm motility and the ability to penetrate the egg cell; In addition, mycoplasma can cause partial sperm membrane defects and even membrane structure destruction, affecting sperm fertilization ability. The indirect effect of pathogenic microorganisms on sperm can be achieved through the production or release of toxic substances. The production of NH3 by mycoplasma during the growth process has a direct toxic effect on sperm.
The decrease in sperm motility caused by infection can also be achieved by changing the pH value of seminal plasma. When the pH value is below 7 or above 8, the decrease in sperm motility is significant. In addition, the increase in white blood cells in semen caused by inflammation can lead to a decrease in sperm motility through direct and indirect reasons. Inadequate sperm motility caused by prostatitis may be the result of a combination of multiple factors, in addition to factors such as microorganisms, white blood cells, and pH value, it may also be related to zinc metabolism disorders.
2. Varicocele
If a man has weak sperm, it is necessary to determine whether there is a cause of varicocele. It not only affects the occurrence of sperm, but also causes a decrease in sperm motility. When blood from the varicocele is trapped, it can cause local microcirculation disorders in the testis, lack of nutrition supply, and decreased oxygen partial pressure. Inadequate energy production can affect sperm production and activity. Therefore, if there is moderate to severe varicocele, it is often oligospermia accompanied by weak sperm, and mild varicocele generally has little impact.
In daily life, we can basically determine through simple physical examinations, such as the curved veins on the surface of the scrotal skin, the tortuous expansion of the spermatic veins, the soft, compressible masses that can be touched during palpation, the feeling of being like molluscs, and the disappearance of the masses after lying flat. Some people may experience discomfort with the fall and expansion of the scrotum after standing for a long time, which are all manifestations of varicocele.
3. Anti sperm antibodies
Anti sperm antibodies are a cause of male infertility. "If male vasectomy, testicular biopsy, testicular torsion, genital tract injury, genital tract infection, accessory gland infection, homosexual sexual behavior, etc., may destroy the blood testicular barrier, and sperm and immune substances in the blood contact, the body will produce anti-sperm antibodies.". At this time, the immune system of the human body will attack sperm as an antigen. This attack will lead to a decline in the quality of sperm, such as an increase in malformation rate, a decline in activity, easy aggregation, coagulation, etc., and a decrease in vitality is the most common.
4. Bad living habits
If a man has some bad living or working habits, it may also cause weak sperm. For example, smoking, drinking too much, staying up late, wearing tight pants, or liking to take a sauna, take a hot bath, sweat, sleep on an electric blanket, etc., as well as the need for work, long periods of sitting, or working in high temperature environments, such as drivers, cooks, boiler workers, etc., long-term detention in such environments, or self exposure to such living environments can easily lead to weak sperm. For men who often play with laptops on their legs, the radiation from laptops can also cause sperm damage, resulting in a decline in sperm quality.
5. Poor eating habits
Poor dietary habits, overeating or partial eating can lead to excessive or insufficient levels of certain trace elements, which can affect sperm motility. When the selenium content in semen decreases, the activity of peroxidase decreases, which cannot inhibit the lipid peroxidation reaction of sperm cell membrane, causing sperm damage, increased sperm death, and decreased vitality. A certain concentration of copper is necessary to maintain sperm motility, but if copper in the seminal plasma is too high, it can inhibit sperm mitochondrial function, leading to decreased or lost sperm vitality.
Zinc deficiency can cause gonadal dysplasia, affect the release of pituitary gonadotropins, lead to decreased or stagnant sperm production, and decrease the ability of sperm to fertilize. Moreover, if you eat improperly or consume too many foods that are harmful to sperm, such as cola, coffee, cottonseed oil, monosodium glutamate, beans, celery, etc., eating too much of these foods can affect sperm production and sperm vitality. If overeating leads to obesity, the increase in estrogen can also lead to weak sperm.
There are many possible reasons for male infertility, such as hormonal and chromosomal factors, among which the above factors are the most common in life. Once the presence of weak sperm is detected, it is necessary to investigate one by one, find out the cause of weak sperm, adjust the lifestyle of the cause, and conduct treatment, so that the improvement of sperm quality is within reach.