What doctors officially call menopause is an event - namely, the point at which you get your last menstrual period. This permanent cessation of menstruation is usually marked by 12 consecutive months of having no periods. Most women experience menopause from 40 to 58 years of age, with a median age of 51.4 years.

For most women, menopause is a normal process of aging. If a woman has had her ovaries removed by surgery or has had damage to her ovaries for other reasons, such as radiation therapy, she may become menopausal from that process.

Some women don't have any symptoms during menopause or only have a few symptoms. Others develop disturbing and even severe, disabling symptoms. Studies of women around the world suggest that differences in lifestyle, diet and activity may play a role in the severity and type of symptoms women have during menopause. Symptoms can be noticed for several months to years before the last menstrual period and can continue for several years after.

As estrogen levels fall, the vagina's natural lubricants decrease. The lining of the vagina gradually becomes thinner and less elastic (less able to stretch). These changes can cause sex to be uncomfortable or painful. They can also lead to inflammation in the vagina known as atrophic vaginitis. These changes can make a woman more likely to develop vaginal infections from yeast or bacterial overgrowth and urinary tract infections.

Before menopause, women have lower rates of heart attack and stroke than men. After menopause, however, the rate of heart disease in women continues to rise and equals that of men after age 65.

For most women, the diagnosis of menopause is made based on a woman's description of her symptoms and the ending of her menstrual periods. Laboratory testing is not usually needed.

Menopause is a natural event and cannot be prevented. Medications, diet and exercise can prevent or eliminate some symptoms of menopause and enhance a woman's quality of life as she grows older.

A number of medications are used to treat the symptoms of menopause. The type of medication needed is a complicated decision and each woman should discuss the issue with her doctor. The treatment will depend on what symptoms are most bothersome and how bothersome they are.

Estrogen taken as a pill or applied to the skin as a patch can reduce hot flashes, sleep disturbances, mood changes and vaginal dryness. Estrogen can be prescribed alone when a woman no longer has her uterus. A combination of estrogen and progesterone is used when a woman still has her uterus. Progesterone is necessary to balance estrogen's effect on the uterus and prevent changes that can lead to uterine cancer.

Medications such as venlafaxine (Effexor) and paroxetine (Paxil) are often the first choice for women with hot flashes who are not on hormone replacement therapy. They relieve the symptoms of hot flashes in 60% of women.

All postmenopausal women who have osteoporosis or are at risk of osteoporosis should take calcium and vitamin D supplements. The usual recommended supplemental dose is 1,000 milligrams of calcium carbonate (taken with meals) or calcium citrate daily. It is best to take this as 500 milligrams twice a day. Women also need 800 international units of vitamin D daily.

Calcitonin - hormone produced by the thyroid gland and helps the body keep and use calcium. A nasal spray form of this drug is used to help prevent bone loss in women at risk. Doctors may prescribe calcitonin to help relieve pain from fractures due to osteoporosis.

There is no relation between the time of a woman's first period and her age at menopause. The age at menopause is not influenced by a woman's race, height, number of children or use of oral contraceptives.

Definitions used on this page

Anxiety

• A state of uneasiness and apprehension, as about future uncertainties.


• Worry or tension in response to real or imagined stress, danger, or dreaded situations. Physical reactions such as fast pulse, sweating, trembling, fatigue, and weakness may accompany anxiety.

Chlorella

• Chlorella is a genus of single-celled green algae, belonging to the phylum Chlorophyta. It is spherical in shape, about 2 to 10 nm in diameter, and is without flagella. Chlorella contains the green photosynthetic pigments chlorophyll-a and -b in its chloroplast. It depends on photosynthesis for growth and multiplies rapidly, requiring only carbon dioxide, water, sunlight, and a small amount of minerals..

Estrogen

• Any one of a group of hormones synthesized by the reproductive organs and adrenal glands in females and, in lesser quantities, in males. The estrogens cause the thickening of the lining of the uterus and vagina in the early phase of the ovulatory, or menstrual, cycle; in lower animals cyclical estrogen secretion also induces estrus, or "heat". The estrogens are also responsible for female secondary sex characteristics such as, in humans, pubic hair and breasts, and they affect other tissues including the genital organs, skin, hair, blood vessels, bone, and pelvic muscles..

Menopause

• The period marked by the natural and permanent cessation of menstruation, occurring usually between the ages of 45 and 55.

PMS

• Premenstrual syndrome.

Perimenopause

• The time period prior to menopause that may last 10 to 15 years, even beginning in one's 30s. It is associated with decreased ovarian function and decreasing estrogen levels.

Progesterone

• Steroid hormone secreted by the female reproductive system that functions mainly to regulate the condition of the endometrium (see uterus), preparing it to accept a fertilized egg. If the egg is not fertilized, the level of progesterone drops, the uterine lining breaks down, and menstruation ensues. If the egg is fertilized, the placenta produces progesterone, whose effects include preparing the mammary glands for lactation..

Biopsy

• Bone marrow aspiration, also called bone marrow sampling, is the removal by suction of fluid from the soft, spongy material that lines the inside of most bones. Bone marrow biopsy, or needle biopsy, is the removal of a small piece of bone marrow.

Climacteric

• A period of life characterized by physiological and psychic change that marks the end of the reproductive capacity of women and terminates with the completion of menopause.


• A corresponding period sometimes occurring in men that may be marked by a reduction in sexual activity, although fertility is retained.

Depression

• In psychiatry, a symptom of mood disorder characterized by intense feelings of loss, sadness, hopelessness, failure, and rejection.

Estrogen

• Any one of a group of hormones synthesized by the reproductive organs and adrenal glands in females and, in lesser quantities, in males.

Hormone

• A substance, usually a peptide or steroid, produced by one tissue and conveyed by the bloodstream to another to effect physiological activity, such as growth or metabolism.

Osteoporosis

• A disease in which the bones become extremely porous, are subject to fracture, and heal slowly, occurring especially in women following menopause and often leading to curvature of the spine from vertebral collapse.

Premenstrual syndrome

• The syndrome occurs in several distinct forms: emotional upheaval, including anxiety, irritability, insomnia, depression, forgetfulness, confusion, and lethargy; cravings for sweets, increased appetite, and intolerance to sugar (headache, heart palpitations, fatigue, and fainting); and fluid retention symptoms with weight gain, puffiness of hands and feet, breast swelling and tenderness, and abdominal bloating and tenderness. Some women suffer with symptoms of all these forms, others only a few..

Progesterone

• A drug prepared from natural or synthetic progesterone, used in the prevention of miscarriage, in the treatment of menstrual disorders, and as a constituent of some oral contraceptives.


• A female hormone that acts on the inner lining of the uterus and prepares it for implantation of the fertilized egg.

Stress

• A state of extreme difficulty, pressure, or strain.


• A physical and psychological response that results from being exposed to a demand or pressure.

Testosterone

• A white crystalline steroid hormone, C19H28O2, produced primarily in the testes and responsible for the development and maintenance of male secondary sex characteristics. It is also produced synthetically for use in medical treatment.

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