Women's Hormone Dictionary

Estrogen is one of the female sex hormones that regulate the menstrual cycle, mainly produced in the ovary (sometimes produced in fat cells). Estrogens are important for sexual development in adolescents, stimulating the uterine lining to grow, prepare the uterus to receive fertilized eggs, and affect all body cells; level falls after menopause. For the first 10-14 days in the women's cycle, the uterus is mainly under the influence of estrogen. Estrogen levels begin to increase before menstruation, peaking at 7 to 14 days and spawning. There are three natural types of estrogen: estradiol (produced in the ovaries), estrone (produced by estradiol) and estriol (formed in small quantities in the ovary). Estradiol is the strongest of these triads. Estrogen slows bone erection and helps reduce heart attack; estrogen also heals skin tone, prevents vaginal instability, affects mood and serves as an anti-aging factor.



Luteinizing hormone (LH) is produced by the pituitary gland in the brain and is responsible for lambing in women. The name comes from the lute; lutein, yellowish fluid filling the corpus luteum. Corpus luteum is a hormone-releasing organ of the follicle containing an evolving egg or the endocrine tissue that forms the sac. In the second half of the corpus luteum cycle, the main female hormone controls the production of estrogen and progestogen (referred to as the luteal stage). When approaching mid-day, ovarian secretions increase the amount of estrogen and a sudden decrease in the level of estrogen immediately before the middle of the cycle triggers a dramatic increase in LH and follicle-stimulating hormones (FSH). This usually occurs between the 12th and the 16th day of the return, with spawning on the 14th (release of the egg). The sudden increase in LH and FSH causes the corpus luteum to burst (also known as follicular cyst) and allows the mature egg to fall into the fallopian tubes. Following ovulation, the corpus luteum gradually shrinks, producing less estrogen and progestogen. The constant reduction of these hormones results in the casting of the uterine lining (menstruation) and the beginning of a new return.


The follicle-stimulating hormone (FSH) is produced by the pituitary gland in the brain, allowing the mature egg to develop and separate from the ovary, from the follicle or from the follicle. Approaching the middle of the day, ovarian FSH and LH produce more estrogen that will make the pituitary cells more susceptible. When the estrogen level begins to fall in the middle loop and the hypothalamus releases hormones, it causes a dramatic increase in LH and FSH.

The progestron is produced in the corpus luteum of the egg. If the pregnant prepares for the fertilized egg and pregnancy does not occur, it is a hormone that stops the cell proliferation in the uterus. Estrogen levels are high between days 7 and 14, while progestron levels are lowest. Levels peak between the 14th and 24th days and falls rapidly before the menstrual period begins. Cells stop progestron production is a signal to the womb to allow all of the new cells produced during this month to go away and to restart. In a sense, menstrual cycle is progestor withdrawal. After 35 years of age, progestogen production in women begins to decrease.