Pregnancy / Childbirth

Hormones in pregnancy

Hormones in pregnancy

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It is hormones that are responsible for many symptoms of pregnancy. There is no chance to avoid their impact: both the positive consequences and the less pleasant symptoms of the changed state. Their impact is in fact many times stronger than in any other period of life. That is why pregnancy is an intense time of change for many, in which everything is possible ...

HCG (chorionic gonadotropin)

It's the most famous pregnancy hormonethat allows detect early pregnancy using a home pregnancy test. It is marked both in the urine as well as in the blood. The body begins to produce it on seven days after fertilization. It is the HCG hormone that is responsible for stimulation of progesterone and withholding menstruation.

The highest levels of chorionic gonadotropin are observed in the middle of the third month. With the development of the placenta, the level of this hormone decreases significantly.


It's a less known hormone called placental lactogen. His main task is to prepare the breast for lactation. Measuring it helps to check that the placenta is developing properly and that the pregnancy is going well.


MSH is a hormone melanotropic, pigmentation. The body produces it all the time, throughout all years of life, but it is during pregnancy that its amount increases.

We observe it in darkened nipplesor sometimes in spots on the face (chloasma). The good news is that all pigmentation changes disappear after delivery.


Typically the female hormone (called the "female hormone"), which is produced throughout the entire fertile period in a woman's life, not just during pregnancy. However, it is precisely when we are expecting a baby that the effects of estrogen have important consequences. First of all, due to estrogen it occurs increasing the amount of water in the tissues, increasing blood volume, increasing breasts. Estrogen is also responsible for changes in the appearance of hair, skin and nails during pregnancy, as well as for increasing body temperature.
Before pregnancy, estrogen stimulates ovulation. During pregnancy, the level of this hormone gradually increases, and after delivery drops sharply.


Shortly after conception, the amount of progesterone, which is a hormone, increases rapidly necessary for nesting eggs in a beetleiance of the uterus. He is also responsible for stopping monthly bleeding. From this less pleasant information: progesterone is responsible for many changes, those less pleasant pregnancy ailments (no wonder, its level increases a hundredfold). Therefore, when its level after the first trimester stabilizes, the least pleasant symptoms of pregnancy pass. And the hormone focuses on controlling the work of the placenta and preventing too fast contractions in pregnancy.

Just before delivery, progesterone levels drop slightly, which is a signal for the uterus to start labor. During this time, swellings or already existing ones are the most common. After delivery, the level of progesterone gradually decreases to values ​​typical for non-pregnant women.

A sharp drop in progesterone in the puerperium is responsible for mood swings and often depressive conditions.


oxytocin is responsible for cramps. Both those appearing during delivery and during the puerperium and during experiencing orgasm. This hormone plays the first violin during the birth of a child, and this is possible due to the action of another hormone: estrogen.

Oxytocin is secreted after delivery during breastfeeding. It also supports uterine contraction. Some women, as a result of her actions, feel sexual satisfaction while feeding the baby.


It is an important milk hormone that is responsible for decreased interest in sex. Its level during pregnancy increases 10-fold, however, after delivery, prolactin has a decisive voice, enabling women to breastfeed (while inhibiting ovulation, reducing the chance of pregnancy) while breastfeeding). In addition, it is an attachment hormone that allows a young mother to better endure difficult moments of childcare. After lactation, prolactin levels drop sharply.


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  2. Hieronim

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