Menarche (pronounced /mɨˈnɑrki/, from Greek μήν moon + αρχή beginning) is the first menstrual cycle, or first menstrual bleeding in the females of human beings. From both social and medical perspectives it is often considered the central event of female puberty, as it signals the possibility of fertility. Timing of menarche is influenced by both genetic and environmental factors, especially nutritional status. The average age of menarche has declined over the last century but the magnitude of the decline and the factors responsible remain subjects of contention.

The average age of menarche in the United States is about 12.5 years and 13.06 ± 0.10 years in Iceland.

Physiology

From Wikipedia under the GNU Free Documentation License
Fri Feb 12 19:11:03 2010

willow arch jpg
sacred-arts-camp.org.uk
willow arch jpg
372px x 569px | 62.20kB

[source page]

M

thatdacv jpg
mum.org
thatdacv jpg
584px x 825px | 38.40kB

[source page]



minibuttonLARGE jpg
freewebs.com
minibuttonLARGE​ jpg
480px x 480px | 22.40kB

[source page]

click here to purchase Click here for a larger view

From Yahoo Image Search: "menarche"
Fri Jan 22 17:48:38 2010

Age at Menarche and Risk of Type 2 Diabetes: Results From 2 Large ...
aje.oxfordjournals.org
Age at Menarche and Risk of Type 2 Diabetes: Results From 2 Large ...

He, C., Zhang, C., Hunter, D. J., Hankinson, S. E., Buck Louis, G. M., Hediger, M. L., Hu, F. B.

Wed, 20 Jan 2010 04:44:37 GM

The authors investigated the association between age at . menarche. and risk of type 2 diabetes mellitus (T2DM) among 101415 women from the Nurses' Health Study (NHS) aged 34 59 years (1980 2006) and 100547 women from Nurses' Health Study ...

Women health care
medic-help.org
Women health care

admin

Sat, 16 Jan 2010 04:51:52 GM

The terms . menarche. menstruation and menopause, are derived from the root men (-sem), related to an event taking place every four weeks and menopause is defined as permanent cessation of menstruation. Resulting from the loss of ovarian ...

Early menstruation correlated with heart disease risk - Wellness ...
wellness.blogs.time.com
Early menstruation correlated with heart disease risk - Wellness ...

Tiffany O'Callaghan

hu, 07 Jan 2010 16:25:38 GM

One key related message, therefore, is that tackling overweight early on in the next generation may be important to avoid early . menarche. and also reduce long-term disease risks." In this latest study, women who got their first period ...

From Google Blog Search: "menarche"
Fri Jan 22 17:48:10 2010

Early Menstruation Lowers Odds of Surviving Ovarian Cancer - Forbes
news.google.com
Early Menstruation Lowers Odds of Surviving Ovarian Cancer

Forbes

Ovarian cancer patients whose age at menarche , or first menstrual cycle, was younger than 12 were 51 percent more likely to die from the cancer than those ...

Reproductive Factors May Influence Ovarian Cancer Survival MedPage Today

Two reproductive factors linked to ovarian cancer survival HemOncToday

Two Reproductive Factors Are Important Predictors Of Death From ... Science Daily (press release)

WebMD  - KYW1060.com

all 24 news articles »
Making A Bigger Splash In The Gene Pool, And How Delaying ... - Science Daily (press release)
news.google.com
Making A Bigger Splash In The Gene Pool, And How Delaying ...

Science Daily (press release)

But in Western countries where girls have been getting richer food in recent years, the age of menarche has been receding. Rich food is an environmental ...
Chidhood Obesity - The Island (subscription)
news.google.com
Chidhood Obesity

The Island (subscription)

Some of the latter include liver disease, early puberty or menarche , eating disorders such as anorexia and bulimia, skin infections, asthma and other ...

From Google News Search: "menarche"
Mon Jul 20 21:53:18 2009

How much discharge is a girl suppose to get each day before she starts menarche?
Q. I'm thirteen, and I haven't gotten my period yet, but I do get a lot, lot, lot discharge everyday. Every once in awhile I get a lot and it feels like I literally peed in my pants. Also, everyday I put some tissues in my undies so I don't feel the discharge. Is that common?
Asked by Jane - Sat May 19 17:38:21 2007 - - 4 Answers - 0 Comments

A. I know some is normal, but too much isn't good. It could be a sign of infection. As women we are susceptible to many things in that area. Talk to your Mom or adult guardian to make an appointment with a gynecologist. Your school nurse may be able to answer these kinds of questions as well. If you are embarrassed about having a man look at you, try and find a female gynecologist. You may want to start buying panty liners to wear daily. They look like regular maxi's but they are much, much thinner and more comfortable for daily use rather than regular pads. Good luck and I hope you are ok:)
Answered by fashionablyconsiousbutconfused - Sat May 19 17:50:54 2007

Irregular period after menarche last month?
Q. I am 14 years old and I have just started my menarche (ever first period) last month. I'm worried that this month's period might be late or I might even skip this month. Is it normal or should I be worried. I'm not entirely sure that last month was really my menarche since I've been having "brown spots" on my underwear since January and only until June I would say the flow started to be regular. P.S.: I'm not sexually active. Thanks for any answers.
Asked by cherry_blossom - Thu Jul 17 13:10:35 2008 - - 3 Answers - 0 Comments

A. It's totally normal! The first year is usually irregular, and it's not practical to keep a schedule until maybe a year after menarche. It's also normal not to know when to expect it, because cramps and bloating don't come into play until two or three months after menarche. Periods, especially first ones, are tricky. Your first period can be bloody and embarrassing, but the following ones can be light and barely noticeable. This is because your body isn't yet used to the process. It's basically having a baby without the baby. Once your body gets used to the rhythm of your periods, they will start to get regular.
Answered by Elena C - Thu Jul 17 13:23:21 2008

Did you have a celebration for your menarche (first period)?
Q. If so, what was it like? And how old were you?
Asked by i U! - Fri Jan 18 21:42:47 2008 - - 7 Answers - 0 Comments

A. Not really. I only rode my bike feeling happy and proud of myself growing up. It was on my 13th birthday.
Answered by Tara662 - Fri Jan 18 21:49:24 2008

From Yahoo Answer Search: "menarche"
Fri Jan 22 17:47:41 2010