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See also "Mensuration", a term sometimes used to describe Measurement, particularly in the context of forestry.

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Wikipedia about Menstruation

See also "Mensuration", a term sometimes used to describe Measurement, particularly in the context of forestry.

MenstrualCycle2.png

Overview

Eumenorrhea denotes normal, regular menstruation that lasts for a few days (usually 3 to 5 days, but anywhere from 2 to 7 days is considered normal). The average blood loss during menstruation is 35 millilitres with 10-80 mL considered normal; many females also notice shedding of the endometrium lining that appears as tissue mixed with the blood. (Sometimes this is erroneously thought to indicate an early-term miscarriage of an embryo.) An enzyme called plasmin  contained in the endometrium  tends to inhibit the blood from clotting. Because of this blood loss, premenopausal women have higher dietary requirements for iron to prevent iron deficiency. Many women experience uterine cramps, also referred to as dysmenorrhea, during this time, caused largely by the contractions of the uterine muscle as it expels the endometrial blood from the woman's body. A vast industry has grown to provide drugs to aid in these cramps, as well as sanitary products to help manage menses.

As part of the menstrual cycle

Menstruation is the most visible phase of the menstrual cycle. Menstrual cycles are counted from the first day of menstrual bleeding, because the onset of menstruation corresponds closely with the hormonal cycle.

During pregnancy and for some time after childbirth, menstruation is normally suspended; this state is known as amenorrhoea, i.e. absence of the menstrual cycle. If menstruation has not resumed, fertility is low during lactation. The average length of postpartum amenorrhoea is longer when certain breastfeeding practices are followed; this may be done intentionally as birth control (lactational amenorrhea method).

Evolution

All placental mammals have a uterine lining that builds up when the animal is fertile, but is dismantled (menstruated) when the animal is infertile. Some anthropologists have questioned the energy cost of rebuilding the endometrium every fertility cycle. However, anthropologist Beverly Strassmann has posited that the energy savings of not having to continuously maintain the uterine lining more than offsets energy cost of having to rebuild the lining in the next fertility cycle, even in species such as humans where much of the lining is lost through bleeding (overt menstruation) rather than reabsorbed (covert menstruation). However, even in humans, much of it is reabsorbed.

Many have questioned the evolution of overt menstruation in humans and related species, speculating on what advantage there could be to losing blood associated with dismantling the endometrium rather than absorbing it, as most mammals do. The ancient writer Hippocrates considered that menstruation was intended to cleanse the body of "evil humours", and modern evolutionary biologist Margie Profet contends that the primary function of menstruation is to remove sperm-borne pathogens from the uterus. In support of this hypothesis, she has pointed to the relatively high levels of macrophages in menstrual blood.

Search results for Menstruation

MedlinePlus: Menstruation

Menstruation ... Menstruation and the Menstrual Cycle(National Women's Health Information Center) ... All about Menstruation(Nemours Foundation) ...www.nlm.nih.gov/medlineplus/menstruation.html

Menstrual Cycles: What Really Happens In Those 28 Days?

Discusses the biology of menstruation, ancient traditions, and myths.www.fwhc.org/health/moon.htm

Menstrual cycle - Wikipedia, the free encyclopedia

Overt menstruation (where there is blood flow from the vagina) occurs primarily ... drops cause the uterus to shed its lining in a process termed menstruation. ...en.wikipedia.org/wiki/Menstrual_cycle

Menstruation and the Menstrual Cycle

Menstruation is the part of a woman's monthly menstrual cycle in which blood and ... PMS usually occurs one or two weeks before menstruation. ...www.nichd.nih.gov/health/topics/menstruation_and_the_menstru...

Talking to Your Child About Menstruation

On average, most girls start their periods when they're 12 or 13 years old. But don't wait until your daughter gets her period to talk to her about menstruation.kidshealth.org/parent/growth/growing/talk_about_menstruation...

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News about Menstruation

Postmenopausal women suffer poor sleep quality

New KeralaWashington, Oct 1 : Postmenopausal women sleep longer than premenopausal counterparts, but are less satisfied with the quality of their nap, say a new study, which blames follicle stimulating hormone (FSH) for the effect.http://www.newkerala.com/fs/f/a-5805.htm

Pussy galore

Las Vegas CityLifeTHERE'S no way of knowing what writer-director Alan Ball has suffered -- or enjoyed -- at the hands of women. But based solely on Towelhead, Ball's directing debut (he also wrote the screenplay), it may be best to remain in ignorance: This is a man more creepily obsessed with vaginas than a roomful of OB/GYNs.http://www.lasvegascitylife.com/articles/2008/09/29/ae/film/...

Sleep Affected By Changes In Sex Steroids Associated With Menopause

Medical News TodayA study in the Oct. 1 issue of the journal Sleep shows that the increased rate of follicle stimulating hormone (FSH) change that occurs during menopause is associated with increased objective sleep duration but poor subjective sleep quality.http://www.medicalnewstoday.com/articles/123812.php

Columbia Laboratories Reports Results From Phase II Clinical Trial Of Vaginally-administered Lidocaine For Dysmenorrhea

Medical News TodayColumbia Laboratories, Inc. (Nasdaq: CBRX) today announced results from its Phase II study of vaginally-administered lidocaine, which the Company is investigating for the prevention and treatment of dysmenorrhea. No treatment currently exists to prevent dysmenorrhea.http://www.medicalnewstoday.com/articles/123771.php

Day 3 Report: 87th WBA Annual Convention!

Fightnews.comOn day three of the 87th annual WBA convention in Punta Cana, Dominican Republic, a full slate was scheduled with part one of the officials seminar, and further meetings among the regional bodies, medical advisory committee meeting, treasury and budget and world championships committee concerning ratings and legal cases.http://www.fightnews.com/wba24a.htm

News about Menstruation

FDA: Stop the birth control lies!

SalonNow you go on the Pill because you want lighter, shorter periods or want to schedule menstruation around vacations and important meetings -- or because it's icky and you want to get rid of it altogether. You take it to clear your skin, regulate your ... http://www.salon.com/mwt/broadsheet/2008/10/08/birth_control

News Briefs

Owen Sound Sun TimesHaving passed all the tests, the child will stay in almost complete isolation at the temple and will return to her family at the onset of menstruation when a new goddess will be named to replace her. UNITED STATES Calorie counters on subway cars NEW ... http://www.owensoundsuntimes.com/ArticleDisplay.aspx?e=12377...

Parenting books you can't live without

San Francisco GateIt was perfect for tweens starting to develop and headed for menstruation. It and others like it helped answer a few initial questions. But by the time I tried to revisit the subject in middle school, I got the blase response: "We already went over ... http://www.sfgate.com/cgi-bin/blogs/parenting/detail?&entry_...

How the Moon rules your life

The IndependentThe lunar cycle has an impact on human reproduction, in particular fertility, menstruation and birth rate. Other events associated with human behaviour, such as traffic accidents, crimes, and suicides, appeared to be influenced by the lunar cycle ... http://www.independent.co.uk/news/science/how-the-moon-rules...

Experts advise regular tests for early detection

Gulf Times ... higher risk. “Women over 35, either whose mother or sister had breast cancer, or those who never had a child or had the first baby after the age of 30, those with excess weight, especially in the upper body area, and those who have menstruation at ... http://www.gulf-times.com/site/topics/article.asp?cu_no=2&it...

Search results for Menstruation

Menstruation

Answers to your questions about menstruation and more! Information you can trust: patient guides, the latest news, tips, tools, animations and newsletters.http://yourtotalhealth.ivillage.com/menstruation.html

Menstruation (Menstrual Cycle) Information on MedicineNet.com

Learn about menstruation (menstral cycle) of a woman. The approximate age a female begins menstruation, and conditions that may warn of irregular vaginal bleeding.http://www.medicinenet.com/menstruation/article.htm

Menstruation and the Menstrual Cycle

Menstruation and the Menstrual Cycle ... The menstrual cycle is the process by which a woman’s body gets ready for the chance of a pregnancy each month.http://www.nichd.nih.gov/health/topics/menstruation_and_the_...

Menstruation definition of Menstruation in the Free Online ...

menstruation, periodic flow of blood and cells from the lining of the uterus uterus, in most female mammals, hollow muscular organ in which the fetus develops and from which it is ... http://encyclopedia2.thefreedictionary.com/menstruation

Menstruation : American Pregnancy Association

Menstruation is the release of the menstraul lining that occurs at the beginning of your menstrual cycle.http://www.americanpregnancy.org/womenshealth/menstruation.h...
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Videos found for Menstruation

New Outpatient Procedure Stops Mens...

New Outpatient Procedure Stops MenstruationKimberly Van Scoy reports on a new outpatient procedure that greatly reduces or stops a woman's menstruation period. The name of the procedure is Novasure.Windows Media - Video

Cartoon about Menstruation

Cartoon about MenstruationCartoon about MenstruationFlash - Video

Lydia Pinkham Liquid To Feel Better...

Lydia Pinkham Liquid To Feel Better During Menstruation And Menopause - 16 OzLydia Pinkham Liquid to Feel Better during Menstruation and Menopause provides nutritional support.Flash - Video

Teenage Girls and Menstruation

Teenage Girls and MenstruationHenry Anhalt, D.O., FAAP, FACOP, FACE, CDE Director, Division of Pediatric Endocrinology and Diabetes at Saint Barnabas Medical Center www.DrMDK.comFlash - Video

Introduction To The Book Of Purific...

Introduction To The Book Of Purification Series Part 8- Ghusl 2 & MenstruationBy: Karim M. AbuZaidFlash - Video

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rem1s5a.ram•Spermatogenesis • Menstruation •Female Reproductive Cycle •realmedia: 0.7 MB w:320px - h:240px

Abnormal Periods

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Molly Grows Up

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Molly Grows Up

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Answers for Menstruation

POURQUOI?!

What causes the uterine lining to shed during menstruation?

POURQUOI?!Interestingly, it is not the presence of a hormone that causes the endometrium (uterine lining that grows the blood vessels) to be shed, but it is the LACK of a hormone, progesterone, that causes the ...
Itachi U

What are the causes and remedy for abnormal menstruation?

Itachi UThis is much too complex an issue to address in this forum. There are many reasons for disturbances in the menstrual cycle and the treatments would not all be the same. It could be hormonal, it coul...
gringo

What medicine to take to stop menstruation for a month and a half?

gringoWhy on earth would she want to stop her natural cycle? I'm sure that some hormone prescription would probably do the trick but I highly doubt that is going to be good for her overall health. This proc...
Jennifer G

What was the view of sex and menstruation before about 1958?

Jennifer GDon't have that many years under my belt (pun intended), but check out that stand up routine that Whoopi Goldberg did I think in 2006, it's a 3 part monologue with the second part being a character wh...
Haydn

how old do most pomeranians have their FIRST menstruation?

Haydn

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