Menstrual Cycles: What Really Happens in those 28 Days?!
Have you ever wondered about the connection between your body's 28 day cycle and the cycle
of the moon? Here's the theory. In the days before electricity, women's bodies were influenced by the amount of moonlight we saw. Just as sunlight and moonlight affect plants and animals, our hormones were triggered by levels of moonlight. And, all women cycled together. Today, with artificial light everywhere, day and night, our cycles no longer correspond to the moon. This article is dedicated to exploring menses: fact and fiction, then and now. The philosophic foundation of the Feminist Women's Health Center is "Knowledge is Power." We believe when women have complete, unbiased information, they are empowered to make their own decisions leading to healthy whole lives. An important role of the FWHC is to provide information, resources for additional information, and give an analysis of the information we present. Here we describe a typical 28 day menstrual cycle and we begin to challenge the dominant American cultural assumptions about menses. Consider for a moment all you've heard about menstruation. Who first told you? What did they call it? How is menstruation viewed by your culture? What taboos have influenced you? How does your partner feel about your period? What impact has advertising had on your knowledge and attitude? What is the motivation of the advertiser? Is your experience different now compared to earlier in your life? First we'll discuss the basic biology of menstruation, then we'll look at ancient traditions.
Basic Biology: the cycle begins
Did you know that when a baby girl is born, she has all the eggs her body will ever use, and many more, perhaps as many as 450,000? They are stored in her ovaries, each inside its own sac called a follicle. As she matures into puberty, her body begins producing various hormones that cause the eggs to mature. This is the beginning of her first cycle; it's a cycle that will repeat throughout her life until the end of menopause. Let's start with the hypothalamus. The hypothalamus is a gland in the brain responsible for regulating the body's thirst, hunger, sleep patterns, libido and endocrine functions. It releases the chemical messenger Follicle Stimulating Hormone Releasing Factor (FSH-RF) to tell the pituitary, another gland in the brain, to do its job. The pituitary then secretes Follicle Stimulating Hormone (FSH) and a little Leutenizing Hormone (LH) into the bloodstream which cause the follicles to begin to mature. The maturing follicles then release another hormone, estrogen. As the follicles ripen over a period of about seven days, they secrete more and more estrogen into the bloodstream. Estrogen causes the lining of the uterus to thicken. It causes the cervical mucous to change. When the estrogen level reaches a certain point it causes the hypothalamus to release Leutenizing Hormone Releasing Factor (LH-RF) causing the pituitary to release a large amount of Leutenizing Hormone (LH). This surge of LH triggers the one most mature follicle to burst open and release an egg. This is called ovulation. [Many birth control pills work by blocking this LH surge, thus inhibiting the release of an egg.] Ovulation As ovulation approaches, the blood supply to the ovary increases and the ligaments contract, pulling the ovary closer to the Fallopian tube, allowing the egg, once released, to find its way into the tube. Just before ovulation, a woman's cervix secretes an abundance of clear "fertile mucous" which is characteristically stretchy. Fertile mucous helps facilitate the sperm's movement toward the egg. Some women use daily mucous monitoring to determine when they are most likely to become pregnant. Mid cycle, some women also experience cramping or other sensations. Basal body temperature rises right after ovulation and stays higher by about .4 degrees F until a few days before the next period. Inside the Fallopian tube, the egg is carried along by tiny, hairlike projections, called "cilia" toward the uterus. Fertilization occurs if sperm are present. [A tubal pregnancy, called ectopic pregnancy, is the rare situation when e a fertilized egg implants or gets lodged outside the uterus. It is a dangerous life-threatening situation if the fertilized egg starts developing and growing into an embryo inside the fallopian tube or elsewhere. The tube will rupture causing internal bleeding and surgery is required. Find more about treatment for Ectopic Pregnancy at http://www.ectopic.org.uk. A woman can use a speculum to monitor her own ovulation and use this information to avoid or encourage a pregnancy. This is the all-natural fertility awareness method (FAM) of family planning. Uterine Changes
Between midcycle and menstruation, the follicle from which the egg burst becomes the corpus luteum (yellow body). As it heals, it produces the hormones estrogen and, in larger amounts, progesterone which is necessary for the maintenance of a pregnancy. [RU-486 works by blocking progesterone production.] In the later stages of healing, if the uterus is not pregnant, the follicle turns white and is called the corpus albicans. Estrogen and progesterone are sometimes called "female" hormones, but both men and women have them, just in different concentrations. Progesterone causes the surface of the uterine lining, the endometrium, to become covered with mucous, secreted from glands within the lining itself. If fertilization and implantation do not occur, the spiral arteries of the lining close off, stopping blood flow to the surface of the lining. The blood pools into "venous lakes" which, once full, burst and, with the endometrial lining, form the menstrual flow. Most periods last 4 to 8 days but this length varies over the course of a lifetime. Bleeding - A New Theory Some researchers view menses as the natural monthly cleansing of the uterus and vagina of sperm and bacteria they carried. Cramps and Other Sensations Women can experience a variety of sensations before, during or after their menses. Common complaints include backache, pain in the inner thighs, bloating, nausea, diarrhea, constipation, headaches, breast tenderness, irritability, and other mood changes. Women also experience positive sensations such as relief, release, euphoria, new beginning, invigoration, connection with nature, creative energy, exhilaration, increased sex drive and more intense orgasms. Uterine cramping is one of the most common uncomfortable sensations women may have during menstruation. There are two kinds of cramping. Spasmodic cramping is probably caused by prostaglandins, chemicals that affect muscle tension. Some prostaglandins cause relaxation, and some cause constriction. A diet high in linoleic and liblenic acids, found in vegetables and fish, increases the prostaglandins for aiding muscle relaxation. Congestive cramping causes the body to retain fluids and salt. To counter congestive cramping, avoid wheat and dairy products, alcohol, caffeine, and refined sugar. Natural options to alleviate cramping:
Increase exercise. This will improve blood and oxygen circulation throughout the body, including the pelvis. Try not using tampons. Many women find tampons increase cramping. Don't select an IUD (intrauterine device) as your birth control method. Avoid red meat, refined sugars, milk, and fatty foods.
Eat lots of fresh vegetables, whole grains (especially if you experience constipation or indigestion), nuts, seeds and fruit. Avoid caffeine. It constricts blood vessels and increases tension. Meditate, get a massage. Have an orgasm (alone or with a partner). Drink ginger root tea (especially if you experience fatigue). Put cayenne pepper on food. It is a vasodilator and improves circulation. Breathe deeply, relax, notice where you hold tension in your body and let it go. Ovarian Kung Fu alleviates or even eliminates menstrual cramps and PMS, it also ensures smooth transition through menopause Take time for yourself!
Anecdotal information suggests eliminating Nutra-Sweet from the diet will significantly relieve menstrual cramps. If you drink sugar-free sodas or other forms of Nutra-Sweet, try eliminating them completely for two months and see what happens. Lifestyle The hormones in our bodies are especially sensitive to diet and nutrition. PMS and menstrual cramping are not diseases, but rather, symptoms of poor nutrition. Premenstrual Syndrome or PMS PMS has been known by women for many many years. However, within the past 30 or so years, pharmaceutical companies have targeted and created a market to treat this normal part of a woman's cycle as a disease. These companies then benefit from the sale of drugs and treatments. Premenstrual syndrome refers to the collection of symptoms or sensations women experience as a result of high hormone levels before, and sometimes during, their periods. One type of PMS is characterized by anxiety, irritability and mood swings. These feelings are usually relieved with the onset of bleeding. Most likely, this type relates to the balance between estrogen and progesterone. If estrogen predominates, anxiety occurs. If there's more progesterone, depression may be a complaint. Sugar craving, fatigue and headaches signify a different type of PMS. In addition to sugar, women may crave chocolate, white bread, white rice, pastries, and noodles. These food cravings may be caused by the increased responsiveness to insulin related to increased hormone levels before menstruation. In this circumstance, women may experience symptoms of low blood sugar; their brains are signaling a need for fuel. A consistent diet that includes complex carbohydrates will provide a steady flow of energy to the brain and counter the ups and downs of blood sugar variations. Menstrual Myths
Every woman's cycle is or should be 28 days long.
Every woman will or should bleed every month. Every woman will or should ovulate every cycle. If a woman bleeds, she is not pregnant. A woman cannot ovulate or get pregnant while she is menstruating.
The above statements are myths. Every woman is different. It's true that most women will have cycles that are around 28 days. But, a woman can be healthy and normal and have just 3 or 4 cycles a year. [However, while variations might be healthy and normal, they could also be a sign of a serious underlying problem. For example, a recent news article suggested that irregular menstrual cycles may predict Type 2 Diabetes.] Ovulation occurs about 14-16 days before women have their period (not 14 days after the start of their period). The second half of the cycle, ovulation to menstruation, is fairly consistently the same length, but the first part changes from person to person and from cycle to cycle. In rare cases, a women may ovulate twice in a month, once from each ovary. Conception/Fertilization of an egg, can only occur after ovulation. The egg stays alive for about 24 hours once released from the ovary. Sperm can stay alive inside a woman's body for 3-4 days, but possibly as long as 6-7 days. If a couple has intercourse before or after ovulation occurs, they can get pregnant, since the live sperm are already inside the woman's body when ovulation occurs. Thus a woman can become pregnant from intercourse for about 7-10 days in the middle of her cycle. (See Fertility Awareness for a complete description of visible signs of ovulation.) Fertility Awareness is a birth control method where women monitor their cycles daily to identify ovulation. They are learning to predict ovulation to prevent or encourage pregnancy. It requires training and diligent record keeping. From our work providing abortion services, we know that some women can be pregnant and continue to have periods at the same time. We also know of cases where women have gotten pregnant during their menstrual period. Menopause Technically menopause is the last menstrual flow of a woman's life and the climacteric is period of time preceding and following this event. In general usage, menopause refers to the whole process. For most women, menopause occurs between the ages of forty and sixty and takes place over a period from 6 months to three years. The menstrual cycle usually goes through many changes, some slow and some sudden, before stopping altogether. A woman's periods may become erratic, closer together, or further apart. She may skip a period or two, or have spotting at other times in her cycle. A common experience is loss of large amounts of blood with a period and passage of large clots. When a woman nears the cessation of her periods, she may not ovulate for one cycle or several
cycles. In this case, the endometrium doesn't receive the chemical message to stop thickening. It grows and grows until its heavy bulk causes a heavy flow. Signals of menopause include hot flashes or flushes, changes in sleep patterns, headaches or migraines, high energy, high creativity, and/or mood changes. As with PMS, some of these symptoms are hormone imbalances caused by poor nutrition. Did You Know?
Women lose between 20 and 80 cc's (1-2 ounces) of blood during a normal period. One in six fertilized eggs naturally results in miscarriage, some of which are reabsorbed by the body and the woman is not aware she's been pregnant. The length of a woman's menstrual cycle (the number of days from the first day of one period to the first day of the next) is determined by the number of days it takes her ovary to