High meat diet may lead to early puberty for girls

High meat diet may lead to early puberty for girls
(PhysOrg.com) -- Increased amounts of meat in children's diets may be part of the reason why girls go through puberty at a much younger age than they did 100 years ago, new research using the Children of the 90s cohort shows.

With evidence suggesting that girls who start their periods early are at higher risk of developing cancer and heart disease, scientists involved in the study said their results added to evidence that it was healthier to avoid high-meat diets.

The research, led by Dr Imogen Rogers from the University of Brighton, involved a study of 3,000 girls taking part in the University of Bristol's Children of the 90s study.

Dr Rogers, working together with colleagues at the University of Bristol including Professor Andy Ness, looked at the girls' at the ages of three and seven years and how likely they were to have started their periods by the time they attended a research clinic aged around 12½ years.

They found that girls who had a higher intake of meat and protein at three and seven were more likely to have started their periods by 12½ years old than girls who ate less meat and protein.

Their report found 49 per cent of girls eating more than 12 portions of meat a week at the age of seven had started their periods by age 12 ½, compared to only 35 per cent of those who ate less than four portions of meat a week.

Dr Rogers, a senior lecturer at the University of Brighton's School of Pharmacy and Biomolecular Sciences, said there was evidence that girls who start their periods early were at higher risk of a number of diseases including , and . This work suggests that a girl's diet in early childhood may affect her risk of suffering from these diseases as an adult.

Dr Rogers said: “Meat is a good source of many important nutrients including iron and zinc and there is no reason why girls should adopt a vegetarian diet or that meat in moderation cannot form a valuable part of a for children.”

She said the findings needed repeating in other populations before firm recommendations on diet can be made but she added: “These results add to the evidence that it is healthiest to avoid diets containing very high amounts of .”

The research, funded by the World Cancer Research Fund, has just been published in the journal Public Health Nutrition. Provided by University of Bristol

Citation: High meat diet may lead to early puberty for girls (2010, June 11) retrieved 21 January 2019 from https://medicalxpress.com/news/2010-06-high-meat-diet-early-puberty.html
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Jun 11, 2010
It might be interesting to see this study repeated after controlling for things like growth hormones used in raising the meat eaten.

Being well fed typically leads to faster maturation. Our bodies produce more growth hormone than we can use, getting more from our food doesn't affect us in any significant way. Multiple studies have confirmed this with double blind controls both in the lab on animals and int he real world with people.

Hormones in food do not significantly alter the human body, but the presence of adequate nutrition will result in taller, stronger, faster-maturing humans in much the same way a well fed plant grows more robustly than a poorly fed plant.

The hormone thing has been debunked, but it's still a commonly held misconception.

Jun 11, 2010
Our bodies produce more growth hormone than we can use
Would this also not be true of cattle? Yet, why are they injected with growth hormones, then?
The hormone thing has been debunked, but it's still a commonly held misconception.
Are you so sure? Growth hormones are one thing, but cattle are also injected with steroids and other crap to boost their muscle mass and growth rates. Steroids are well-known to affect humans in rather unpleasant ways, like causing females to e.g. exhibit certain male traits (like deepening voice, increased body hair), while evincing feminizing changes in males (like shrunk testicles, breast tissue growth.)

Jun 11, 2010
Biological father absence results in early onset..

its been known for a long time...

but its not acceptable to the ideology, so everything else has to be touted...

meanwhile, it even fits evolutionary models in which early fertility would save a girl child whose father was killed and mother took new mate, from ending up as the young males did. dead.

the fact that feminism has changes demographics and since that time more and more girls grow up in homes without fathers (step father wont do, wrong MHCs), the more that increases, the earlier the onset for the whole.

to think that fathers are just natures wallets belies a lack of understanding of darwin. any force that changes the life dynamic and is maintained for a long time, gets plumbed for advantage, and adaptation.

traditional families in graves have been found now from the earliest times of mans habitations... where primal mating demanded even more selection than today.

you can find it if you look...
but who looks?

Jun 11, 2010
@ArtflDgr,
but its not acceptable to the ideology, so everything else has to be touted...
What does that have to do with:

"Their report found 49 per cent of girls eating more than 12 portions of meat a week at the age of seven had started their periods by age 12 ½, compared to only 35 per cent of those who ate less than four portions of meat a week."

Jun 11, 2010
I see a recipe for social instability. Well-fed girls (and boys) mature fast and becoming physically adults essentially; while social pressures, norms and morals hold them back in "children" status. No wonder some of them ran amok and contribute to an increasing teen violence rate.

Jun 11, 2010
I'm just happy to point out that no one went after the title of the article. (sigh) Our little community is growing up...

Jun 12, 2010
Our bodies produce more growth hormone than we can use
Would this also not be true of cattle? Yet, why are they injected with growth hormones, then?
Cattle are quite a bit different due to how heavily we've messed with their metabolism in demoestication.
Are you so sure? Growth hormones are one thing, but cattle are also injected with steroids and other crap to boost their muscle mass and growth rates. Steroids are well-known to affect humans in rather unpleasant ways, like causing females to e.g. exhibit certain male traits (like deepening voice, increased body hair), while evincing feminizing changes in males (like shrunk testicles, breast tissue growth.)

Steroids are a very different thing. In order for steroids to work you must metabolize them. Once they're metabolized by the cattle you cannot re-metabolize them by eating the Cattle. For the most part there are strict controls on steroid use leading up to slaughter because of this fact.

Jun 12, 2010
at least this is the theory.
No, this is your theory. If you don't metabolize something your body does not use it. This is very basic human biology.

Jun 12, 2010
Then you're a really bad pharmacist.

Steroids depending on type, function by filling receptor slots within your body's various systems, this is the process of metabolization. Use and subsequent biological breakdown. If your cells don't use it, then it doesn't get metabolized.

And selling viagra via spam mails is not pharmacology.

Jun 12, 2010
In other news, "Early puberty may lead to a high meat diet for girls".

Jun 12, 2010
Ahahaha
woww Skeptic you are sick man, thats all I have to say, I dont want to argue with you, it is pointles,
I am sorry but you are unmature....grow up!

Ad hominem because you've been caught in a lie. Sorry friend, claiming false knowledge will always result in sound refutation on this site.

Jun 12, 2010
Then define metabolism and show me where I'm incorrect.

Jun 12, 2010
The problem is the iron in the meat. We began using REFRIGERATION and NOW we eat alot more meat than we did BEFORE refrigeration. This is shown by those people who found Metformin reduces precocious puberty. The 'coincidental' thing here is the FACT metformin ALSO lowers iron. So reverse engineering says .. "if metformin lowers iron and iron is considered to BE a CAUSE of precocious puberty then the study of metformin lowering precocious puberty tells us the iron very possibly causes precocious puberty" ..
Pretty simple really ..
Imho ..

Jun 12, 2010
Despite their relatively simple chemical structure, steroids occur in a wide variety of biologically active forms. This variety is not only due to the large range of compounds secreted by steroid-synthesizing tissues, but also to the fact that circulating steroids are extensively metabolised peripherally, notably in the liver, and in their target tissues, where conversion to an active form is sometimes required before they can elicit their biological responses.

From: http://www.gfmer....ism.html

Metabolism occurs in the receptive tissues in addition to the liver, it is how steroids work. Back to school with you, sir. The uptake and expression of chemical function as provided for by a steroid or other hormone is post metabolism. Without actually receiving the steroid (the first step of metabolism) there is no functional expression. Metabolism is required for functionality. The post metabolites won't have discernable effect.

Jun 12, 2010
The problem is the iron in the meat. We began using REFRIGERATION and NOW we eat alot more meat than we did BEFORE refrigeration. This is shown by those people who found Metformin reduces precocious puberty. The 'coincidental' thing here is the FACT metformin ALSO lowers iron. So reverse engineering says .. "if metformin lowers iron and iron is considered to BE a CAUSE of precocious puberty then the study of metformin lowering precocious puberty tells us the iron very possibly causes precocious puberty" ..
Pretty simple really ..
Imho ..

Jun 12, 2010
synthetic hormones must be metabolized to have a function. Synthetic simply means they manufactured as opposed to withdrawn from a physical/biological system, like donated blood.

Jun 12, 2010
This comment has been removed by a moderator.

Jun 20, 2010
What does that have to do with:

"Their report found 49 per cent of girls eating more than 12 portions of meat a week at the age of seven had started their periods by age 12 ½, compared to only 35 per cent of those who ate less than four portions of meat a week."

easy if an answer is not allowed, since the cause is father absence, and father absence is desired (as a STATED result of their cause), then of course they will attempt to tie it to anything but what it is.

the same is true of perimenopause, which starts in early 20s.. but tell women following the new have babies too late plan (birth control), dont know that their best fertility time has passed due to politics.


Jun 20, 2010
Ok and you are saying that girls with no fathers are eathing more meat?

no.. did you read the MHC part and know what it meant. or did you see it, think its pretty letters and ignore it rather than look it up?

just as women select men with different mhc signals over those with the same when they are fertile... females as children can also smell their parents, and so a child who does not smell the mhc signal of dad, biologically knows dad is gone, and her body changes to suit the living condition change.

praeder willi is mitigated by father presence (meaning if dad is around the kids use energy different)

and same is true of menses.

the science done recently reminds me of ht stories of the work done in my old country. soviet union.

Jun 20, 2010
What precludes the possibility that girls who are biologically predisposed towards early puberty are more likely to want to eat meat?

Jun 20, 2010
@ArtflDgr,
Biological father absence results in early onset..
Provide a link to or citation of an epidemiological study demonstrating this. Unless and until you do, all of your arguments on the topic are nothing but an untested hypothesis.

Am I to understand your contention with regard to the above-described study is, that the statistically significant correlation of early puberty onset with high meat consumption is nothing but a highly unlikely coincidence?

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