Progesterone

What is progesterone?

Progesterone is a steroid hormone that plays a vital role in the menstrual cycle and pregnancy. Known as the "pregnancy hormone", progesterone helps prepare the body for conception and supports the development of the fetus during pregnancy.

Some key facts about progesterone:

• Secreted by the corpus luteum in the ovary after ovulation. The corpus luteum forms from the follicle that released the egg.


• Causes the lining of the uterus to thicken to support implantation of a fertilized egg.


• Helps maintain pregnancy by supporting the uterine lining and preventing contractions. Progesterone levels rise steadily during pregnancy.


• Works together with estrogen in the menstrual cycle. There is a delicate balance between estrogen and progesterone.


• Used in hormone therapy to treat menstrual irregularities, infertility, and symptoms of menopause.

Role in Menstrual Cycle

• After ovulation, progesterone levels rise causing the uterine lining to thicken.


• If pregnancy occurs, progesterone levels stay elevated to maintain the uterine lining.


• If no pregnancy occurs, progesterone levels drop allowing menstruation to occur.

Progesterone is essential for a healthy, regular menstrual cycle. Low progesterone can lead to infertility, irregular periods, or polycystic ovary syndrome (PCOS).

As women approach menopause, progesterone levels start to decline. This hormonal imbalance leads to many of the symptoms associated with perimenopause and menopause like hot flashes, night sweats, and sleep disturbances.

Hormone replacement therapy with estrogen and progesterone may help relieve these symptoms. The experts at Balance Hormone Solutions can help determine if hormone therapy with bioidentical hormones is right for you.

Role in Pregnancy

Progesterone is absolutely vital for supporting pregnancy:

• Prepares the uterus for implantation of the fertilized egg


• Supports the growth and development of the fetus by maintaining the uterine lining and supplying oxygen and nutrients


• Prevents contractions of the uterus allowing the pregnancy to progress


• Works together with estrogen and hCG during pregnancy

If progesterone levels are too low in early pregnancy, miscarriage risk is higher. That's why progesterone supplements are sometimes prescribed to help sustain high-risk pregnancies.

Understanding the role of important hormones like progesterone provides insight into the incredible feat of human reproduction. The reproductive endocrinologists at Balance Hormone Solutions stay up-to-date on the latest hormone research and treatments to best support patients. Reach out today to learn more!