Progesterone - Vitality Medical Center

What is Progesterone?

Progesterone is an important hormone that plays a vital role in the female menstrual cycle and pregnancy.

What Does Progesterone Do?

• Progesterone is secreted by the corpus luteum in the ovary after ovulation. It helps prepare the uterus for implantation of a fertilized egg.
• It also helps maintain pregnancy by thickening the uterine lining and preventing contractions of the uterine smooth muscle.
• During pregnancy, progesterone helps support the developing fetus by maintaining the uterine lining, promoting growth of blood vessels, and more.
• Progesterone levels rise steadily during pregnancy and reach peak levels in the 3rd trimester.

Key Functions

Some of progesterone's key functions include:

• Working with estrogen to regulate the menstrual cycle
• Preparing the uterus for pregnancy
• Maintaining the uterus during pregnancy
• Promoting development of mammary glands
• Regulating libido and sexual behavior

What Causes Low/High Progesterone?

Low progesterone can be caused by problems with ovulation, polycystic ovary syndrome (PCOS), early menopause, and more. Symptoms may include irregular periods, infertility, and spotting.

High progesterone, while less common, could indicate issues like adrenal tumors. Symptoms may include fluid retention, nausea, and mood changes.

Checking Progesterone Levels

Progesterone levels can be checked via blood test. Levels vary throughout the menstrual cycle and peak ~1 week after ovulation. Abnormal progesterone levels may indicate issues with fertility or pregnancy.

If you have any other questions about progesterone or related hormonal health concerns, please consult with the professionals at Vitality Medical Center.