The Role Of Progesterone In Pregnancy | Functions & Benefits

Progesterone in PregnancyProgesterone in pregnancy

If you are wondering about the role of Progesterone, this article will highlight the importance of Progesterone in Pregnancy and why it is important.

Progesterone is an important part of the menstrual cycle and it prepares the uterus for pregnancy.

It causes the uterine lining or the endometrium to thicken. It helps to build and sustain the lining of a uterus.

The lining is an important part since this is the part where the fertilized egg will get implanted.

Progesterone Function

Progesterone hormone also known by pregnancy hormone is produced by ovaries, placenta and adrenal glands.

The level of Progesterone in Pregnancy rises until the baby is delivered.

The role of Progesterone during Pregnancy is to maintain the endometrium throughout the pregnancy.

This is also known to stimulate growth and development of glands in the breast which is responsible for milk production for breastfeeding.

What Causes Low Progesterone?

It is important for childbearing years and if the levels are low you will end up having trouble for pregnancy.

You may experience low levels during the follicular phase of the menstrual cycle. There may be other reasons attributed to low levels of Progesterone which includes menopause, ovulation or ovary problems, miscarriage.

There are certain symptoms of low Progesterone in pregnant women:

How Common Is Low Progesterone?

Low Progesterone level during Pregnancy is not considered a healthy sign and leads to serious complications.

If the levels of Progesterone is low during pregnancy it will not be able to hold the baby for the tenure of 9 months.

If the Progesterone levels are lower than 6 to 10 ng/ml (in the 6th week) there rises the high risk of miscarriage.

Progesterone Levels In Pregnancy

Progesterone Levels Chart

Progesterone Levels Chart

The normal levels of progesterone on the basis of weeks are classified below.

  • Progesterone levels are important and a complete watch out has to be ensured during the entire tenure of pregnancy.
  • Progesterone level day 21 if pregnant, in a cycle of 28 days will be at peak.
  • Progesterone levels in early Pregnancy (1st and 2nd week), the level should range between 1 to 1.5ng/ml. The body starts preparing for pregnancy and starts releasing a small amount of progesterone.
  • Normal Progesterone levels in Pregnancy (3rd and 4th week) where endocrines in the ovaries will start producing the hormone and gradually the level will increase to 2 ng/ml or maybe little more.
  • In the fifth and sixth week, the level will reach around 10ng/ml-29ng/ml. At this point in time, the body will start developing the embryo and the placenta and the blood vessels start getting developed.
  • In the (7-14th week), Progesterone level will reach anywhere between 15-60ng/ml. This will help the body to expand and accommodate the baby.

Benefits of Progesterone Pills

If the levels of Progesterone are low in the pregnancy these pills will help to regulate the level and helps to prevent miscarriage. However, it should be noticed that these pills have to be taken under the doctor’s guidance.

Progesterone In Early Pregnancy To Prevent Miscarriage

There are basically two types of Progesterone that are a natural and synthetic form of Progesterone.

Progesterone maintains the uterine lining for implantation of the embryo and studies proves that this helps to prevent miscarriage.

The lining nourishes the growing baby from the early days till the end of pregnancy.


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