Description
Progesterone is an endogenous steroid and a female sex hormone that is involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. It’s produced mainly in the ovaries following ovulation each month. During the luteal phase (or second half) of the menstrual cycle, a rise in luteinizing hormone (LH) stimulates ovulation. The corpus luteum is subsequently formed and secretes progesterone which promotes the development of secretory endometrium.It belongs to the steroid hormones group called progestogens .There is increase in level sharply during the luteal phase of menstrual cycle.From 9 to 32 weeks of pregnancy there is an increase in level. It’s a crucial part of the menstrual cycle and maintenance of pregnancy.Thus it helps to regulate the menstrual cycle.
But its main job is to get your uterus ready for pregnancy. After you ovulate each month, progesterone thickens the lining of the uterus to prepare for a fertilized egg. If there is no fertilized egg, progesterone levels drop and menstruation begins. If a fertilized egg implants in the uterine wall, progesterone helps maintain the uterine lining throughout pregnancy.Progesterone is necessary for breast development and breastfeeding. It complements some effects of estrogen, another female hormone. It also works with testosterone, the precursor for adrenal hormones. Men produce a small amount of progesterone to help in sperm development.Low progesterone may cause abnormal uterine bleeding in women who aren’t pregnant. Irregular or absent periods may indicate poorly functioning ovaries and low progesterone. Men, children, and postmenopausal women all have lower progesterone levels than women in their childbearing years. A person’s age and gender decides the normal progesterone level. In women, other factors include whether you’re pregnant and where you are in your menstrual cycle.
Progesterone levels fluctuate throughout the menstrual cycle. They peak about seven days before your period. And levels can vary during a single day. With low progesterone, if you are trying for a baby , hormone therapy could be useful. Hormone therapy increases progesterone levels and may help thicken your uterine lining. This may improve your chances of a healthy pregnancy and carrying to term.Menstrual irregularities and abnormal bleeding can improve with hormone therapy. For severe symptoms of menopause, hormone therapy usually involves a combination of estrogen and progesterone. Women who take estrogen without progesterone are at increased risk of developing endometrial cancer.Treatment options for progesterone supplementation include creams and gels, suppositories, which are commonly used to treat low progesterone that causes fertility problems or oral medications, like Provera. The test is useful for monitoring patients having ovulation induction with hCG, hMG, FSH/LHRH, or clomiphene.
