One: Sperm is different.
Normal pregnancy gives birth to a child, and the combination of sperm and eggs is a natural random combination. However, the sperm of IVF is generally of higher quality, while IVF is just different from the normal fertilization procedure, but it is also the best quality sperm artificially selected.
Two: Different positions
The development and fertilization of IVF are carried out outside the human body. At this time, we can easily see the combination process of eggs and sperm, but if we follow the normal pregnancy process, then we can't see it, because this combination and development process is carried out in the body.
Three: different health.
It is not that the health status of IVF is worse than that of normal-born babies. There are many reasons and many factors. Some test-tube babies are even healthier than normal babies.
Therefore, those couples who can't have children and want to be IVF, but worry a lot, don't think too much. Test-tube babies are no different from ordinary babies, and they are all healthy. There are many rumors that the survival rate of IVF is particularly low, and the child will get sick after birth. Here is a good response to this statement, which is all a rumor.