Estradiol in pregnancy

Among all the female hormones, it is estradiol that plays an important role in the occurrence of pregnancy. At this time, its activity increases and, as a consequence, its content in the blood rises.

What controls estradiol?

The hormone estradiol is the most biologically active of the estrogen group to which it belongs. Immediately, this hormone plays a dominant role in the formation of the female reproductive system, and is also responsible for the formation of secondary sexual characteristics in girls. Estradiol is mainly responsible for the normal operation of the entire reproductive system, with his participation the menstrual cycle is regulated.

Where is it produced?

In some cases, the level of estradiol in the blood of a woman is lowered, but pregnancy does not occur. Normally, estradiol is continuously produced by the adrenal glands, as well as by the ovaries of testosterone, which is a male sex hormone. Depending on the version of the phase of the menstrual cycle, its level changes. This hormone is also found in men, but in very low concentration. In his absence, a man develops infertility.

How does estradiol change during pregnancy?

The level of estradiol during pregnancy increases dramatically, and normally ranges between 210-27000 pg / ml. At the same time, the concentration of estradiol during pregnancy in the blood every week increases, as confirmed by the table below.

Value

The amount of the hormone estradiol in the blood, exactly like progesterone, during pregnancy is very important. They are responsible for bearing the fetus. Thus, a low concentration of estradiol in the female blood during the current pregnancy, especially in the early stages, can lead to its interruption.

During the current pregnancy, estradiol regulates the state of the uterine vessels and thereby ensures normal blood circulation of the fetus. Also, this hormone increases blood coagulability. That is why his level reaches a peak immediately before birth, which reduces the risk of bleeding.

Under the influence of estradiol, the mood of the pregnant woman also changes. The woman is more irritable, always nervous. Even excessive puffiness, which many suffer in pregnancy, is a consequence of the increased content of estradiol.

An increase in the level of estradiol can often be caused by a large mass of heat. This is due to the fact that the fat cells themselves also produce hormone this hormone.