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 Study: More U.S. girls starting puberty early

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BigBrownEyes29
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PostSubject: Study: More U.S. girls starting puberty early   Mon 09 Aug 2010, 9:29 am

I came across this article on CNN site today. Then was reading the comments at the bottom, interesting views on this. Two comments stood out (highlighted them in blue below following the article. What are your thoughts on this?

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By Amanda Gardner, Health.com
August 9, 2010 9:00 a.m. EDT

Girls in the United States are entering puberty at earlier ages than they have in the past, a new study reports.

More than 10 percent of white 7-year-old girls in the study, which was conducted in the mid-2000s, had reached a stage of breast development marking the start of puberty, compared to just 5 percent in a similar study conducted in the early 1990s.

Black and Hispanic girls continue to mature faster than white girls, on average. Nearly one-quarter of black girls and 15 percent of Hispanic girls had entered puberty by age 7, according to the new study, which appears in the journal Pediatrics.

But the trend toward earlier puberty is not as pronounced among blacks as it is among whites, the researchers say. Although the rate of early puberty among black girls in the study (23 percent) was higher than that observed in the early 1990s (15 percent), the increase was not statistically significant.

"White girls are catching up," says Frank Biro, M.D., the lead author of the study and the director of adolescent medicine at Cincinnati Children's Hospital.

Experts aren't sure what's behind the increase in earlier puberty, but it's likely due to a combination of factors, including the childhood obesity epidemic and substances in the environment.

Early puberty in girls is a growing public health concern because studies have shown that girls who start puberty earlier are more likely to develop breast and uterine cancer later in life. The National Institutes of Health funded the study as part of a larger investigation into the environmental factors that contribute to breast cancer risk.

"Breast cancer is such a common problem, so if we can find some of the things that make it more likely, we could improve screening of those early developers," says Susan Nickel, M.D., an assistant professor of pediatrics at the Texas A&M Health Science Center College of Medicine, in Temple. (Nickel was not involved in the new research.)

Health.com: Is it baby fat or obesity?

Cancer risk isn't the only concern surrounding early puberty. Early development in girls has been linked with poor self-esteem, eating disorders, and depression, as well as cigarette and alcohol use and earlier sexual activity.

"If an 11- or 12-year-old girl looks like she's 16, people will interact with her as if she were 16," Biro says. "Early maturation increases the rate of risk-taking behaviors and lowers academic performance. It doesn't mean it's going to happen, but it could."

Health.com: Plastic baby bottles and BPA: Health risk or hysteria?

Between 2004 and 2006, Biro and his co-authors assessed the breast development of more than 1,200 girls ages 6 to 8 in three major U.S. cities (New York, Cincinnati, and San Francisco). The stage of development in which a girl's breasts begin to "bud" is considered the onset of puberty, not her first menstrual cycle.

The average age of the first period has declined as well, says Nickel. "Girls used to get their first menstrual period at 14 or 15," she says, but now the average is closer to 12.

Health.com: The big three hormones

Regardless of their race, girls with a higher body mass index (BMI) -- a ratio of height to weight -- tend to mature sooner, the researchers found. This finding, which has been reported in other studies, suggests that soaring obesity rates among children may be contributing to the rates of early puberty.

But it's not yet clear why girls -- and especially white girls -- are starting to physically mature at younger ages. One theory is that excess body fat affects the levels of hormones that trigger puberty.

Health.com: 4 things that mess with your hormones

Chemicals in the environment -- most notably bisphenol-A (BPA), which is found in many hard plastic products -- may affect hormones as well, says Gary Berkovitz, M.D., a professor of pediatric endocrinology at the University of Miami's Miller School of Medicine.

A girl's experience in infancy and even in the womb may also contribute to earlier puberty, according to a second study that appears in the same issue of Pediatrics.

Health.com: Make play areas greener and safer for kids

In that study, which included about 4,000 girls in the United Kingdom, researchers from the Centers for Disease Control and Prevention found that mothers who had their first period before age 12, smoked during pregnancy, and were pregnant for the first time had daughters who entered puberty sooner than other girls.

Above-average weight gain during infancy was also associated with earlier puberty, the study found.



"Whatever109
You know what it is? It's the growth hormones used in animals that trigger this. They use it in meat and pretty much any animal product. These growth hormones weren't used as much in the past so that would explain the recent rise. I've noticed that many young girls look very mature for their age and... more
You know what it is? It's the growth hormones used in animals that trigger this. They use it in meat and pretty much any animal product. These growth hormones weren't used as much in the past so that would explain the recent rise. I've noticed that many young girls look very mature for their age and I can only attribute it to this. Whatever those people put inside those animal you are also putting inside of yourself.
"


"stevenabb500
Let me put in my "internet expert opinion" of which there are many of us so call experts . If an animal has a very abundant food source, the animal ( even humans ) will trigger something inside that says "Hey let's get ready for reproduction early, there's tons of food around here." People are getting bigger and reproducing earlier. With our abundant food supply, each generation on average now is about 6 inches taller than their parents. The same concept is working with reproduction. Just like birds that have more chicks with an abundant food supply, humans have tricks to attempt to produce even more young. Well, that's my "internet expert opinion"... no reason to spend years getting a Phd.
"

http://www.cnn.com/2010/HEALTH/08/09/girls.starting.puberty.early/index.html?hpt=T2
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yorkiemom
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PostSubject: Re: Study: More U.S. girls starting puberty early   Mon 09 Aug 2010, 9:37 am

I have heard that theory before and not sure what triggers the earlier puberty in some girls and not others

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PostSubject: Re: Study: More U.S. girls starting puberty early   Mon 09 Aug 2010, 10:30 am

I'm not sure what triggers it either, but both comments brought up two really good theories. I'm still leaning towards the growth hormones that are injected into the livestock.
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PostSubject: Re: Study: More U.S. girls starting puberty early   Mon 09 Aug 2010, 11:21 am

I have to agree BBE,they certainly cannot be doing us any good health wise

I quit eating chicken along time ago due to the way I know they are fed huge amounts of growth hormones to hurry the process of them becoming broilers

We eat beef from people that grain feed and give them time to grow naturally

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PostSubject: Re: Study: More U.S. girls starting puberty early   Mon 09 Aug 2010, 12:00 pm

A friend of mine.. Had to have blood work done on her 8 year old child.. for Some stuff. They found that she had hormones of a usual 18 year old girl. The hormones were out of wack.....

So I do think it is the food we eat.. All of it. The more chemicals they put into it.. the more profit they make
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yorkiemom
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PostSubject: Re: Study: More U.S. girls starting puberty early   Mon 09 Aug 2010, 2:41 pm

You are so right Mini,look at the cattle on a feed lot,they are walking in their own feces,fed hormones to fatten them up quicker and most people run to the grocery store to get another steak

I quit buying at the grocery store a long time ago,I buy from people I know that butcher,can I guarentee they have not been fed hormones NO,but I hope that they are honest when they tell me not


Pork is the same,and I simply won't eat chicken at all


My daughter started her period at 11 for christ sakes,developed breasts and not small ones at approximately the same age,I have no idea what she ingested for the first 4 years of her life


The other one is 13 and NOTHING,but I had her from a baby and know what she ate

Until Bryan died we raised our own pigs and cow or bought our beef from the neighbor next door

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PostSubject: Re: Study: More U.S. girls starting puberty early   Tue 10 Aug 2010, 8:21 pm

My cousins 8 year daughter already has her period, mind you she is a bit of a big girl but that is still way to early. I heard all the growth hormones in food had something to do with it.
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PostSubject: Re: Study: More U.S. girls starting puberty early   Tue 10 Aug 2010, 8:36 pm

that is really young Mousey and almost scary,a little girl should be just that,it makes me sad that things have progressed to this point

I to think it is the hormones in the food produced

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PostSubject: Re: Study: More U.S. girls starting puberty early   Tue 10 Aug 2010, 9:09 pm

Yes makes me sad too. Little girls are growing up way too fast these days.
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PostSubject: Re: Study: More U.S. girls starting puberty early   Tue 10 Aug 2010, 9:51 pm

I agree, it is something in what they are eating!!

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