Biological differences between IVF and natural pregnancy
IVF and natural pregnancy are two different ways of reproduction. IVF baby is conceived in the laboratory through IVF technology, while natural pregnancy is completed under natural conditions. From a biological point of view, there are differences between IVF and natural pregnancy in the following aspects.
1. Fertilization process
Natural pregnancy means that during the female physiological period, the sperm enters the female body and fertilizes with the egg to form a fertilized egg. In the laboratory, IVF fertilizes sperm and egg in vitro, and the fertilized egg after fertilization is cultured during cell division. Finally, the well developed embryo is implanted into the female uterus for implantation.
The fertilization process of natural pregnancy is relatively simple, which requires the male and female reproductive systems to work normally, and ovulation, the quantity and quality of sperm, etc. are in a normal state. The IVF process requires assisted reproductive technology to deal with the fertilization problem, including cell culture, embryo screening and other steps.
In general, there are obvious differences between IVF and natural pregnancy in the process of fertilization. IVF needs laboratory conditions and assisted reproductive technology to achieve the process of fertilization.
2. Pregnancy probability
The pregnancy probability of IVF and natural pregnancy is also different. The pregnancy probability of natural pregnancy is usually related to women's age, ovulation, sexual life time and other factors. According to statistical data, the pregnancy rate of natural pregnancy is about 20-30% globally on average. The pregnancy rate of IVF is affected by many factors, including women's age, egg quality, uterine condition, etc. According to relevant research, the pregnancy rate of IVF is usually between 30-60%.
The relatively high pregnancy rate of IVF is because IVF technology can select high-quality embryos for implantation. The pregnancy probability of natural pregnancy will be affected by more unknown factors, so there are relatively certain risks.
3. Intervention degree
Natural pregnancy is completed under natural conditions without human intervention, while IVF needs assisted reproductive technology and doctors' operation. IVF needs a series of operations, such as sperm and egg extraction, in vitro fertilization, culture and embryo screening, etc. It also needs multiple evaluations and monitoring during the process of embryo development. Finally, doctors will implant a well developed embryo into a woman's uterus for implantation.
Relatively speaking, the success rate of IVF depends more on the operating technology of doctors and laboratories, so it needs the cooperation of professional medical teams and the use of assisted reproductive technology.
4. Cost and time
Compared with natural pregnancy, IVF needs higher economic cost and time investment. In the process of IVF, it involves multiple examinations, medical expenses, laboratory operation costs, etc. Moreover, the success rate of IVF is not 100%, which may require multiple attempts to succeed.
Natural pregnancy is relatively inexpensive, and the success rate is also a certain probability. Natural pregnancy also does not require redundant medical procedures and examinations, and the time and energy input is relatively small.
summary
There are significant differences between IVF and natural pregnancy in fertilization process, pregnancy probability, intervention degree, cost and time. IVF needs the help of assisted reproductive technology and the cooperation of the medical team. The pregnancy rate is relatively high, but it requires high economic costs and time investment. Natural pregnancy is more dependent on its own physiological conditions, and the probability of pregnancy is relatively low, but no additional economic and time investment is required. The choice of the method needs to be determined according to the actual situation of the individual and medical advice.
