Success rate of IVF
IVF is an assisted reproductive technology, which helps couples who cannot conceive naturally realize their reproductive aspirations by implanting embryos fertilized in vitro into their mothers. However, IVF is not a 100% successful treatment, and its success rate is affected by many factors.

1、 Age and egg quality
Female age is one of the important factors for the success rate of IVF. Young women have a relatively high success rate because of their better egg quality. According to statistics, the success rate of women under 35 can reach 40% to 50%. However, with the growth of women's age, the egg quality gradually declines, and the success rate will also decrease accordingly. For women over 40 years old, the success rate is only 10% to 20%.
In addition, for women with abnormal ovarian function or poor egg quality, the success rate of IVF will also be reduced. These factors will lead to fewer eggs in quantity and quality, thus reducing the chance of successful implantation.
2、 Male sperm quality
The quality and quantity of male sperm are also important factors affecting the success rate of IVF. Sperm quality includes sperm concentration, motility and morphology. If the quality of male sperm is poor, such as insufficient sperm, low motility or abnormal morphology, the success rate of IVF will be significantly reduced.
For those couples with poor sperm quality, doctors may take some auxiliary methods, such as advanced culture technology of enhanced sperm or selective sperm injection (ICSI), to increase the success rate of IVF.
3、 Embryo quality
Embryo quality is another important factor in the success rate of IVF. The quality of embryos depends on the quality of eggs and sperm, as well as the environmental factors of in vitro culture. If the embryo develops abnormally, such as slow cell division, insufficient cells or chromosome abnormalities, the chance of successful implantation will be greatly reduced.
In order to improve embryo quality and select the most likely successful embryo, doctors may conduct embryo evaluation and selection. For example, by observing the development of embryos, detecting their genome and chromosome abnormalities, we can screen the most likely successful embryos for implantation.
4、 Experience of hospitals and doctors
The equipment and technical level of the hospital, as well as the experience and professionalism of doctors are also important factors that determine the success rate of IVF. There are many hospitals and doctors with rich experience in the world who have made good achievements in the field of IVF.
Choosing a hospital with good reputation, advanced equipment and experienced doctors for IVF is an important way to improve the success rate. These hospitals and doctors are usually able to provide more professional treatment programs and more personalized care, thus improving the success rate of patients.
Summary
The success rate of IVF is affected by many factors, including female age and egg quality, male sperm quality, embryo quality, and the experience of hospitals and doctors. Young women and couples with better sperm quality have higher success rates, while poor egg and sperm quality, poor embryo quality, and inexperienced hospitals and doctors will reduce the success rate of IVF. Therefore, the success rate of IVF can be improved by selecting appropriate hospitals and doctors and taking comprehensive care of diet, exercise and psychology.