Reasons for delayed menstruation
Delayed menstruation is a problem that many women may face. There are many reasons for delayed menstruation, including physical reasons, living habits, mental stress, and so on. First of all, physical reasons may be one of the main reasons for delayed menstruation. The disorder of the body's endocrine system, ovarian dysfunction, endometrial abnormalities and other problems may lead to menstrual cycle disorders.

Secondly, living habits may also have an impact on the menstrual cycle. Bad eating habits, lack of exercise, chronic diseases, etc. may lead to irregular menstruation. In addition, long-term mental stress will also change women's menstrual cycle.
Whether it is due to physical reasons or living habits and mental stress, women should seek medical advice in time to find out the causes of irregular menstruation and receive appropriate treatment.
Principles of IVF technology
IVF technology is an assisted reproductive technology that helps couples who cannot conceive naturally to achieve fertility. IVF technology mainly includes two steps: in vitro fertilization and embryo transfer.
First of all, in vitro fertilization is to combine female eggs and male sperm in the laboratory, cultivate fertilized eggs, and then select the best quality embryos for transplantation.
Secondly, embryo transfer is to transfer the cultured embryo into the uterus of a woman so that it can implant and grow, and finally achieve pregnancy.
The principle of IVF technology is to help couples realize their desire for fertility through laboratory assisted fertilization and embryo transfer.
Application of IVF
IVF technology is one of the effective means to solve the problem of non natural pregnancy. IVF can be considered in the following cases:
First of all, women suffer from irreversible blockage or closure of the fallopian tube, unable to ovulate naturally.
Secondly, men suffer from low quality or insufficient quantity of sperm.
Third, both husband and wife have reproductive problems, such as female ovarian dysfunction, and male sperm quantity and quality are not ideal.
Finally, IVF can also be the choice of some older women, because with the growth of age, women's fertility will gradually decline.
Hospital selection of IVF
The following factors can be considered when selecting IVF hospitals:
First, choose a regular hospital to ensure that doctors have rich experience and expertise.
Secondly, understand the success rate and treatment plan of the hospital. The success rate can be used as an important indicator to measure the technical level of hospitals.
Thirdly, understand the equipment and environmental conditions of the hospital. Hospitals with advanced equipment can provide better medical services.
Finally, when choosing a hospital, you can refer to the experience and evaluation of some friends or acquaintances to understand their feelings.
Summary
The delayed menstruation may be caused by a variety of reasons, including physical reasons, living habits and mental stress. For couples who cannot conceive naturally, IVF technology is an effective assisted reproductive technology. In vitro fertilization (IVF) and embryo transfer (ET) are used in IVF to achieve fertility. When selecting IVF hospitals, it is necessary to consider the experience and expertise of doctors, the success rate and treatment plan of the hospital, equipment and environmental conditions, and the evaluation of others. To sum up, IVF is a suitable choice for couples with delayed menstruation.