What is menstruation?
![Menstruation is the monthly process of shedding built up uterine lining. The average age at which a woman stops menstruating is 50 years old.](https://images.medicinenet.com/images/article/main_image/what-is-the-average-age-a-woman-stops-menstruating.jpg?output-quality=75)
Themenstrual cycleis a series of hormone-regulated changes that a woman's body goes through to get it ready for a possiblepregnancy. It occurs in monthly cycles betweenpubertyandmenopause, except duringpregnancy. The first occurrence ofmenstruationis calledmenarche. A woman usually starts menstruating or attains menarche between the age of 10 and 16 years old.Menopausemarks the end of the menstrual cycle. It's diagnosed when the menstrual period has not occurred in 12 months.
Women usually stop menstruating or attainmenopause在40或50岁,平均年龄50年old. Sometimes, menopause may occur earlier due to a medical condition, medication, drug treatment or surgery such as the removal of the ovaries. Menarche and menopause are natural biological processes. After a woman attains menopause, her menstrual cycle ends, and she would no longer be able to getpregnant. If bleeding occurs after 12 months of not having periods, it is calledpostmenopausalbleeding. This requires medical attention.
What is a menstrual cycle?
During each menstrual cycle, an egg develops and is released from one of the ovaries (ovulation). At the same time, the lining of the uterus becomes thicker due to hormonal changes. If pregnancy does not occur, the thickened lining (endometrium通过阴道accompani)的子宫了ed by bleeding. Bleeding usually lasts for three to eight days and this is known as menstruation or a period. A menstrual cycle usually lasts between 24 and 38 days but is typically 28 days long.
Hormones regulating the menstrual cycle
The menstrual cycle is regulated by a complex group of hormones produced by thepituitary glandand hypothalamus along with the ovaries. Luteinizing hormone andfollicle-stimulating hormoneproduced by the pituitary gland promote ovulation and stimulate the ovaries to produce estrogen andprogesterone.
Phases of the menstrual cycle
There are four phases of the menstrual cycle
- Menstruation:The period of shedding of the uterine lining accompanied by bleeding is called menstruation. Estrogen and progesterone levels are low.
- 在卵泡期:This is the time between the first day of the period and ovulation. The estrogen level increases as an egg prepares to be released and the uterine lining builds up.
- Ovulation (day 14):During this time, an egg is released rom the ovary mid-cycle.
- The luteal phase:This is the time between ovulation and the start of menstruation. The body prepares for a possible pregnancy. The progesterone level peaks and then drops if pregnancy does not occur.
Causes for irregularities in the menstrual cycle
- Pregnancy (missed period)
- Breastfeeding
- Eating disorderssuch asanorexia nervosa
- Extremeweight loss
- Excessive exercising and physical activity
- Polycystic ovary syndrome
- Premature ovarian failure
- Pelvic inflammatory disease
- Uterine fibroids
What is menopause?
Menopause is considered to have occurred when a woman has not had a menstrual period for 12 consecutive months. This occurs because the ovaries no longer make estrogen and progesterone. Women typically experience menopause in their 40s and 50s. After a woman attains menopause, her menstrual cycle ends and ovulation stops and she would no longer be able to get pregnant. The period before menopause is calledperimenopause. During this time, estrogen and progesterone levels fluctuate, and numerous symptoms may be experienced.
Premature menopauseis when a woman stops menstruating between the age of 30 and 40 years old.
Symptoms ofperimenopause
Perimenopause symptoms occur for four years on an average before menopause. These include
- Irregular, lighter or heavier periods
- Hot flashes
- Chills
- Night sweats
- Fatigue
- Aches and pains
- Weight gainand slowed metabolism
- Changes in skin texture
- Thinning hair
- Loss of breast fullness
- Bladder control problems
- Vaginal dryness
- Change in sexual desire
- Lowerfertility
- Sleeping difficulty
- Anxiety,depressionandmood swings
- Memory loss
There are several treatment options available to treatmenopause symptoms. This includes hormonal therapy, non-hormonal medications and lifestyle modifications. Women may consult a doctor to seek treatment for their menopausal symptoms.
Lifestyle changes to manage menopausal symptoms
Lifestyle changes that can be made to manage menopause symptoms include
- Regularexercise
- Meditation
- Healthydiet
- Quittingsmoking
- Limitingalcoholintake
- Seeking counseling
- Good sleeping habits
- Doing Kegel exercises to strengthen the pelvic floor
- Joining afitnessclub, volunteering or taking up a new hobby
- Keeping an active sex life
- Over-the-countergels and other products forvaginal dryness
Postmenopausal health risks
After menopause, the risk of following health issues increases
- Breast cancer(some types ofbreast cancerare more likely to develop)
- Osteoporosis
- Cardiovascular disease
- Uterine polyps
If bleeding occurs after 12 months of not having periods, it is called postmenopausal bleeding. This requires medical attention because it could be due to benign ormalignanttumors.
![](https://images.medicinenet.com//images/slideshow/osteoporosis_s1_bone_density.jpg)
SLIDESHOW
What Is Osteoporosis? Treatment, Symptoms, MedicationSee SlideshowWomensHealth.gov
Mosby's Guide to Women's Health
The North American Menopause Society
Top What Is the Average Age a Woman Stops Menstruating Related Articles
Tips to Ease Menopause Symptoms
What happens during menopause? At what age do menopause symptoms start? Women in their 40s or 50s may begin to have hot flashes, night sweats, and sleep problems as they enter menopause. See what triggers some menopause symptoms. Get tips for relief through treatment.15 Things Women Should Know About Menopause
Menopause is a phase in a woman's life that challenges her physically and emotionally. Many women deal with menopause without any medical treatments, whereas some women with severe symptoms require therapies.9 Signs of Perimenopause
Perimenopause occurs before menopause as estrogen levels begin to change. This can cause menopause like symptoms such as hot flashes, night sweats, heavy bleeding, weight gain, vaginal dryness, and changes to libido. Pregnancy is still possibly during perimenopause.Menopause
Menopause is the time in a woman's life when menstrual periods permanently stop, also called the "change of life." Menopause symptoms and signs include hot flashes, night sweats, irregular vaginal bleeding, vaginal dryness, painful intercourse, urinary incontinence, weight gain, and emotional symptoms such as mood swings. Treatment of menopausal symptoms varies and should be discussed with your physician.Menopause Quiz
The Menopause Quiz challenges your knowledge about the time in a woman’s life when menstruation ceases. Menopause can bring many physical, mental and sexual challenges to maturing women, but they don’t have to be limiting. Take the Menopause Quiz to learn the causes, symptoms and treatments of what’s known as "the change of life."Menopause & Perimenopause: Symptoms, Signs
What is menopause? What are the signs of menopause? What age does menopause start? Learn about menopause and perimenopause symptoms. Find the latest treatments for menopause.Sex and Menopause
Menopause is often associated with a change in sexual functioning. Loss of estrogen, bladder control issues, anxiety, stress, health concerns, medications, and sleep disturbances often result in a decrease in libido. Though there are currently no good drugs for treating sexual problems in women, there are ways to increase intimacy with a partner and treat vaginal dryness.Perimenopause
Perimenopause is the time in a woman's life when she is approaching menopause. During this time a woman starts to develop symptoms of declining estrogen levels that may include mood swings, painful sex, night sweats, hot flashes, and weight gain. Every adult woman eventually will experience perimenopause.Premature Menopause
Premature menopause is when menopause occurs in a woman before the age of 40. Causes of premature menopause include premature ovarian failure, treatments for cancer and other conditions, surgical removal of the ovaries, chronic diseases of the pituitary or thyroid gland, or psychiatric disorders. Treatment is directed at menopausal symptoms.Sexual Side Effects of Menopause
Menopause marks the end of the reproductive era in a woman's life. Some women view it positively as periods no longer trouble them and there is no chance of getting pregnant even with unprotected sex. However, as estrogen and testosterone levels take a plunge during menopause, some women experience the sexual side effects of menopause.What Are the 40 Symptoms of Menopause?
Menopause is the end of the reproductive era of a woman's life that is characterized by drastic changes in her emotional and physical aspects. Studies have identified around 40 signs and symptoms of menopause, but not every woman gets all of them.Why Am I Having Menstrual Cramps but No Period?
Menstrual cramps may happen even without a period. Learn more about menstrual cramps without a period, when they can happen, what causes them, and what to watch out for. Menstrual cramps are a type of abdominal pain women get when they have their period. Menstrual cramps may occur after running due to dehydration, gastrointestinal problems, hypothyroidism and pregnancy.