Possible reasons for low success rate of IVF
Test tube baby is a common method to treat infertility. However, despite years of development, the success rate of this technology still has some limitations. The following details the possible reasons for the low success rate of IVF from four aspects: physiological factors, technical factors, environmental factors and psychological factors.

Physiological factors
Physiological factors are one of the important factors affecting the success rate of IVF. First of all, age is an important factor affecting women's ability to conceive. The growth of women's age will lead to the decline of egg quality and increase the risk of IVF failure. Secondly, women with polycystic ovary syndrome, uterine fibroids and other gynecological diseases will also have a negative impact on the success rate of IVF. In addition, the decrease in the quality and quantity of male sperm, such as low sperm density and abnormal sperm morphology, will also reduce the success rate of IVF.
In addition, couples with chromosome abnormalities are also likely to affect the survival rate of IVF. For example, women carrying chromosomal abnormalities may lead to abnormal embryonic development and increase the risk of miscarriage. Male chromosomal abnormalities may lead to abnormal embryo implantation, reducing the success rate of IVF.
In addition, the pressure and emotion of couples will also have a negative impact on the success rate of IVF during the long-term infertility treatment. High level of anxiety and tension will make the body in a stress reaction, which will affect the normal function of the reproductive system.
Technical factors
The success rate of IVF is also affected by technical factors. First, the professional level of assisted reproductive technology is one of the important factors that determine the success rate. The technical level of different hospitals and doctors may be different, which affects the success rate of IVF. Secondly, the precision and accuracy of IVF and embryo transfer will also affect the success rate of IVF. Operational errors in the processing of sperm, eggs and embryos may lead to abnormal embryonic development and implantation failure.
In addition, the development of IVF technology still needs to be improved. The current technology is still unable to completely solve the problems of embryo implantation and implantation, resulting in a low success rate. In addition, the culture medium used in IVF technology also affects the development and survival rate of embryos to a certain extent.
environmental factor
Environmental factors may also affect the success rate of IVF. First, the deterioration of environmental factors such as air quality, water pollution and food safety may have adverse effects on the health of the reproductive system, thus affecting the success rate of IVF. Secondly, personal behaviors such as lifestyle and eating habits also affect the success rate of IVF. Poor living habits such as unbalanced diet, smoking and drinking will weaken the function of the reproductive system and reduce the success rate of IVF.
psychological factor
Psychological factors play an important role in the success rate of IVF. The psychological pressure and anxiety caused by infertility will affect the effect of IVF treatment. Depression, tension and anxiety will lead to endocrine disorder and affect the normal function of the reproductive system. In addition, the psychological shadow of long-term failure to conceive will also affect the expectations and confidence of both spouses for successful treatment, thus affecting the success rate of IVF.
Summary
The possible reasons for the low success rate of IVF mainly include physiological factors, technical factors, environmental factors and psychological factors. Age, gynecological diseases, sperm quality and other physiological factors and technical factors such as technical level and operation accuracy, as well as environmental factors such as environmental pollution, lifestyle and eating habits, will affect the success rate of IVF. In addition, the psychological state and mood of the couple will also have a negative impact on the success rate of IVF. Therefore, these factors should be comprehensively considered in IVF treatment, and a reasonable treatment plan should be adopted to improve the success rate.