5 truths about precocious puberty in children?

Many mothers are circulating a dietary "blacklist", it is said that children eat these foods, which will lead to precocious puberty, and the foods on the list are: out-of-season vegetables and fruits, bovine colostrum, soy milk, honey, royal jelly, fast-growing chicken...... It makes parents very anxious and feel that they dare not give anything to their children.

So, what is precocious puberty, and do these foods really cause precocious puberty in children?

Recently, it is common to see news that a 7-year-old girl has a developed breasts and an 8-year-old boy has a beard..... These are cases of precocious puberty in children.

Precocious puberty actually refers to the early development of a child's secondary sexual characteristics.

"Early" is defined as breast development before the age of 8 or menstruation before the age of 10 in girls, and genital enlargement in boys before the age of 9. This is a common pediatric endocrine disorder, in which girls are 10 times more common than boys

[1]。

According to the survey data released by the China Health Promotion and Education Association in 2017

[2]，

The prevalence of precocious puberty in children in mainland China is 0.43%, that is, there are about 530,000 children with precocious puberty in the country, but the medical treatment rate is less than 1/3, and the incidence rate is increasing year by year.

If left untreated, the epiphysis will close prematurely, and the child may be short in stature in adulthood, and there will be great psychological problems, such as lack of self-confidence, withdrawn personality, and even aggressive behavior. In addition, the risk of early love, early pregnancy, and sexual offences will also increase.

01

Out-of-season vegetables and fruits

Truth: Does not cause precocious puberty.

With the development of science and technology, the quality of people's life and diet has improved, and there are out-of-season fruits and vegetables in order to eat fresh, such as: strawberries, grapes, watermelons in winter......

But every year there are such rumors: "You can't eat out-of-season fruits and vegetables, and they are born with hormones!" In addition, there will be sensational "news" from time to time that "a one-x-year-old girl in xx city eats ripening strawberries and causes precocious puberty", and many parents are shy away from out-of-season fruits and vegetables and resolutely put them on the "blacklist".

In fact, whether it is off-season or seasonal fruits and vegetables, a certain amount of plant growth regulators will be used in the modern planting process, which is what everyone calls plant hormones.

In fact, fruits, like people, need to rely on hormones if they want to grow up smoothly, so natural fruits themselves carry a certain amount of plant hormones.

Although they are called hormones, plant hormones are far from human hormones, from the molecular structure to the mechanism of action are not the same thing, plant hormones work on plants, and there is no corresponding receptor in the human body, and the effect on the human body is negligible.

Plant growth regulators are also usually free of sex hormones and do not cause precocious puberty in children. Moreover, in the process of modern agricultural production, producers will not use plant growth regulators in violation of regulations, because this operation may damage crops and the gains outweigh the losses.

Therefore, it is completely unfounded to worry that out-of-season fruits and vegetables will make children develop early.

02

Other animal-based foods

Truth: Does not cause precocious puberty.

Meat is also often suspected of being related to hormones, and the most common claims about precocious puberty caused by animal foods are: yellow eels fed with birth control pills and fast-growing chickens fed with hormones.

This rumor has been spread for many years, and the "People's Daily" has made a special issue of "verification".

[3]。 Experiments have proved that feeding contraceptives can easily lead to the death of yellow eels, and the high cost of contraceptives makes it impossible for farmers to do so.

Due to the extraordinary growth rate of fast-growing chickens, they were slaughtered in more than 40 days, so the rumor that "it must have been hormones when it grows so fast!" spread.

In fact, fast-growing chickens are actually called "fast large white-feathered chickens", and fast-growing chickens are the result of improved breed breeding and scientific feeding. The 40 days of slaughter are mainly due to: "good genes", "good food" and "good housing". If you really take hormones or feed hormones, it may not help, and it will be similar to the end of the eel.

03

Bovine colostrum

Truth: Does not cause precocious puberty.

The Ministry of Health stipulates that from September 1, 2012, colostrum and dairy products made from bovine colostrum will no longer be added to infant formula

[4]。

In addition, bovine colostrum itself contains hormones, and some reports that "an average of about 20 children are diagnosed with precocious puberty every day in a hospital in xx city, and they all have a common characteristic: long-term consumption of bovine colostrum." ”

As a result, rumors that "bovine colostrum can cause precocious puberty in children" are all over the world.

In fact, in 2009, the relevant industry measured the content of 50 hormones in bovine colostrum, and the results showed that there was no statistical difference between the hormones in bovine colostrum and the hormones in ordinary milk.

And, with the same type of hormones, the hormones in human milk, especially human colostrum, are generally higher than those in ordinary cow's milk and bovine colostrum. Take 10,000 steps back and say that if the hormones in bovine colostrum can cause precocious puberty in children, then breastfed children can't escape it.

Although the "crime" of precocious puberty has been rehabilitated, for children, compared with ordinary milk, bovine colostrum does not have higher nutritional value, but has some potential dangers, such as causing allergies, so parents should not blindly believe in the exaggerated effect of advertising and place unrealistic hopes on colostrum.

04

Soy milk, tofu and other soy products

Truth: Does not cause precocious puberty.

Many people say that soy products contain estrogen-like "soy isoflavones", which may cause precocious puberty in infants and children.

In fact, soy isoflavones are just similar in molecular structure to human estrogen, and looking like them does not mean that they have the ability to work in the human body, and the essence of the two is worlds apart.

At present, there is no scientific evidence to confirm that there is a direct or indirect relationship between soy products and precocious puberty in children, and regular consumption will not be a problem.

05

Honey, royal jelly

Truth: Does not cause precocious puberty.

There are many rumors that these bee products "contain hormones", and when given to children, they may also affect development and cause precocious puberty.

The most important ingredient in honey is sugar, which accounts for more than 80% of the total, and then remove more than 10% of the water, leaving less than 1% of the ingredients are some vitamins and minerals, proteins, organic acids, etc. There may also be trace amounts of pollen in natural honey.

Trace amounts of hormones are present in bee pollen, but there is no threat because they are present in very small amounts, and on the other hand, as mentioned above, plant hormones do not have the same biological effect in the human body.

Let's look at royal jelly. Royal jelly is a substance secreted by worker bees to feed the larvae of bees. Many people think that it can "ripen" bees because of sex hormones at work.

The ingredient in the royal jelly "ripening" bees is not a sex hormone, but an active protein called "Royalactin", which is inactive in the human body and does not have a substantial effect. On the other hand, it has been found that there are indeed trace amounts of sex hormones in royal jelly, but its content is too low to affect human physiology

[5]。

Excluding organic lesions, the main causes of precocious puberty in children may be:

 1. Overnutrition 

As mentioned earlier, children with precocious puberty have eaten bovine colostrum, and if you dig deeper, it may be that they have too much dietary intake, and their weight and body fat percentage are exceeded. Being overweight or obese may lead to excessive secretion of sex hormones in children, increasing the risk of precocious puberty.

Studies have shown that the arrival of puberty in American children shows a trend of younger age, which is closely related to the soaring childhood obesity rate

[6]。

2. Exposure to exogenous sex hormones 

If your child is accidentally overdosed on drugs containing sex hormones (such as birth control pills, menopausal hormone therapy medications), supplements, creams, and sprays, precocious puberty such as breast development may occur.

3. Exposure to environmental hormones 

Some special pollutants produced by industry and agriculture, as well as some special chemicals contained in daily necessities (such as detergents, plastic products, etc.), may exert a sex hormone-like effect on the human body.

If children are exposed to these substances for a long time and frequently, it can lead to early sexual development and early onset of puberty.

In conclusion, precocious puberty may not be caused by eating the wrong or bad food, or it may be that you are sick, overeating, ingested, or exposed to exogenous sex hormones.

Therefore, the most important thing is to maintain a balanced, varied and healthy diet, maintain a healthy weight, and buy daily necessities that meet health and safety standards. And parents should be careful not to let the drugs used by adults fall into the hands of their children.

Reviewers

Shi Zhengli丨Nutrition technician of the Nutrition Department of Beijing Friendship Hospital

bibliography

[1] Cesario SK,Hughes LA. Precocious puberty:a comprehensive review of literature[J]. Journal of Obstetric,Gynecologic & Neonatal Nursing,2007,36(3):263-274.

[2]http://www.chinanews.com/jk/2017/01-16/8125956.shtml

[3] Xiao Panpan, Zhang Wen, Li Gang, et al. Seeking verification, exploring the truth behind the noise, and paying attention to the quality and safety of aquatic products (2) Is yellow eel fattening by hormones? [J]. China Fisheries, 2012, 440(007):11-13.

[4]http://www.gov.cn/xxgk/content_2198000.htm

[5] Chen Minghu, Chen Kun. Analysis of the Hormonal Effects of Royal Jelly[J]. Honey Bee Journal, 2010(09):15-17.

[6] Rosenfield R L, Lipton R B, Drum M L. Thelarche, pubarche, and menarche attainment in children with normal and elevated body mass index[J]. Pediatrics, 2009, 123(1): 84-88.

Content production

*Produced by the Tencent Medical Dictionary content team

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.1);--weui-TAG-TEXT-BLUE: rgba(16, 174, 255, .6);--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(255, 255, 255, .5);--weui-TAG-BACKGROUND-BLACK: rgba(255, 255, 255, .05)}}@media screen and (min-width:1024px){body:not(.pages_skin_pc) .wx-root[data-weui-theme=dark],body:not(.pages_skin_pc) body[data-weui-theme=dark]{--appmsgExtra-BG: #121212}}@media screen and (min-width:1024px){body:not(.pages_skin_pc)body:not(.pages_skin_pc){background:var(--weui-BG-2)}}@media screen and (min-width:1024px) and (prefers-color-scheme:dark){body:not(.pages_skin_pc) .wx-root[data-weui-mode=care]:not([data-weui-theme=light]),body:not(.pages_skin_pc) body[data-weui-mode=care]:not([data-weui-theme=light]){--weui-BG-0: #111;--weui-BG-1: #1e1e1e;--weui-BG-2: #191919;--weui-BG-3: #202020;--weui-BG-4: #404040;--weui-BG-5: #2c2c2c;--weui-FG-0: rgba(255, 255, 255, .. 85);--weui-FG-HALF: rgba(255, 255, 255, .65);--weui-FG-1: rgba(255, 255, 255, .55);--weui-FG-2: rgba(255, 255, 255, .35);--weui-FG-3: rgba(255, 255, 255, .1);--weui-FG-4: rgba(255, 255, 255, .15);--weui-FG-5: rgba(255, 255, .1);--weui-RED: #fa5151;--weui-ORANGERED: #ff6146;--weui-ORANGE: #c87d2f;--weui-YELLOW: #cc9c00;--weui-GREEN: #74a800;--weui-LIGHTGREEN: #3eb575;--weui-FIRE: #07c160;--weui-BLUE: #10aeff;--weui-INDIGO: #1196ff;;--weui-PURPLE: #8183ff;--weui-WHITE: rgba(255, 255, 255, .8);--weui-LINK: #7d90a9;--weui-TEXTGREEN: #259c5c;--weui-FG: #fff;--weui-BG: #000;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6);--weui-TAG-BACKGROUND-RED: rgba(250, 81, 81, .1);--weui-TAG-TEXT-ORANGE: rgba(250, 157, 59, .6);--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: rgba(6, 174, 86, .6); --weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .) 1);--weui-TAG-TEXT-BLUE: rgba(16, 174, 255, .6);--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(255, 255, 255, .5);--weui-TAG-BACKGROUND-BLACK: rgba(255, 255, 255, .05)}}@media screen and (min-width:1024px) and (prefers-color-scheme:dark){body:not(.pages_skin_pc) .wx-root:not([data-weui-theme=light]),body:not(.pages_skin_pc) body:not([data-weui-theme=light]){--weui-BG-0: #111;--weui-BG-1: #1e1e1e;--weui-BG-2: #191919;--weui-BG-3: #202020;--weui-BG-4: #404040;--weui-BG-5: #2c2c2c;--weui-FG-0: rgba(255, 255, 255, .8);--weui-FG-HALF: rgba(255, 255, 255, .6);--weui-FG-1: rgba(255, 255, 255, .5);--weui-FG-2: rgba(255, 255, 255, .3);--weui-FG-3: rgba(255, 255, 255, .1);--weui-FG-4: rgba(255, 255, 255, .15);--weui-FG-5: rgba(255, 255, 255, .1);--weui-RED: #fa5151;--weui-ORANGERED: #ff6146;--weui-ORANGE: #c87d2f;--weui-YELLOW: #cc9c00;--weui-GREEN: #74a800;--weui-LIGHTGREEN: #3eb575;;--weui-FIRE: #07c160;--weui-BLUE: #10aeff;--weui-INDIGO: #1196ff;--weui-PURPLE: #8183ff;--weui-WHITE: rgba(255, 255, 255, .8);--weui-LINK: #7d90a9;--weui-TEXTGREEN: #259c5c;--weui-FG: #fff;--weui-BG: #000;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6);--weui-TAG-BACKGROUND-RED: rgba(250, 81, 81, .1);--weui-TAG-TEXT-ORANGE: rgba(250, 157, 59, .6);--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: rgba(6, 174, 86, .. 6);--weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .1);--weui-TAG-TEXT-BLUE: rgba(16, 174, 255, .6);--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(255, 255, 255, .5);--weui-TAG-BACKGROUND-BLACK: rgba(255, 255, 255, .05)}}@media screen and (min-width:1024px) and (prefers-color-scheme:dark){body:not(.pages_skin_pc) .wx-root:not([data-weui-theme=light]), body:not(.pages_skin_pc) body:not([data-weui-theme=light]){--appmsgExtra-BG: #121212}}@media(prefers-color-scheme::dark){body:not([data-weui-theme=light]).my_comment_empty_data{background-color:#111}}body,.wx-root{--weui-BG-6: rgba(0, 0, 0, .05);--weui-ACTIVE-MASK: rgba(0, 0, 0, .05)}body,.wx-root{--weui-REDORANGE: #ff6146;--weui-BG-0: #ededed;--weui-BG-1: #f7f7f7;--weui-BG-2: #fff;--weui-BG-3: #f7f7f7;--weui-BG-4: #4c4c4c;--weui-BG-5: #fff;--weui-FG-0: rgba(0, 0, 0, .9);--weui-FG-HALF: rgba(0, 0, 0, .9);--weui-FG-1: rgba(0, 0, 0, .55);--weui-FG-2: rgba(0, 0, 0, .3);--weui-FG-3: rgba(0, 0, 0, .1);--weui-FG-4: rgba(0, 0, 0, .15);--weui-FG-5: rgba(0, 0, 0, .05);--weui-RED: #fa5151;--weui-ORANGERED: #ff6146;--weui-ORANGE: #fa9d3b;--weui-YELLOW: #ffc300;--weui-GREEN: #91d300;--weui-LIGHTGREEN: #95ec69;--weui-FIRE: #07c160;--weui-BLUE: #10aeff;--weui-INDIGO: #1485ee;--weui-PURPLE: #6467f0;--weui-WHITE: #fff;--weui-LINK: #576b95;; --weui-TEXTGREEN: #06ae56;--weui-FG: #000;--weui-BG: #fff;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6);--weui-TAG-BACKGROUND-RED: rgba(250, 81, 81, .1);--weui-TAG-TEXT-ORANGE: #fa9d3b;--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: #06ae56;--weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .1);--weui-TAG-TEXT-BLUE: #10aeff;--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);-- weui-TAG-TEXT-BLACK: rgba(0, 0, 0, .5);--weui-TAG-BACKGROUND-BLACK: rgba(0, 0, 0, .. 05)}body,.wx-root{--weui-BG-0: #ededed;--weui-BG-1: #f7f7f7;--weui-BG-2: #fff;--weui-BG-3: #f7f7f7;--weui-BG-4: #4c4c4c;--weui-BG-5: #fff;--weui-FG-0: rgba(0, 0, 0, .9);--weui-FG-HALF: rgba(0, 0, 0, .9);--weui-FG-1: rgba(0, 0, 0, .55);--weui-FG-2: rgba(0, 0, 0, .3);--weui-FG-3: rgba(0, 0, 0, 0, .1);--weui-FG-4: rgba(0, 0, 0, .15);--weui-FG-5: rgba(0, 0, 0, .05);--weui-RED: #fa5151;--weui-ORANGERED: #ff6146;--weui-ORANGE: #fa9d3b;--weui-YELLOW: #ffc300;--weui-GREEN: #91d300;--weui-LIGHTGREEN: #95ec69;--weui-FIRE: #07c160;--weui-BLUE: #10aeff;--weui-INDIGO: #1485ee;--weui-PURPLE: #6467f0;--weui-WHITE: #fff;--weui-LINK: #576b95;--weui-TEXTGREEN: #06ae56;--weui-FG: #000;--weui-BG: #fff;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6);--weui-TAG-BACKGROUND-RED: rgba(250, 81, .1);-- weui-TAG-TEXT-ORANGE: #fa9d3b;--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: #06ae56;--weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .1);--weui-TAG-TEXT-BLUE: #10aeff;--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(0, 0, 0, .5);--weui-TAG-BACKGROUND-BLACK: rgba(0, 0, 0, .05)}.wx-root,body{--weui-BTN-ACTIVE-MASK: rgba(0, 0, 0, .1)}.wx-root,body{--weui-BTN-DEFAULT-ACTIVE-BG: #e6e6e6}.wx-root,body{-- weui-DIALOG-LINE-COLOR: rgba(0, 0, 0, .1)}.wx-root,body{--weui-BG-COLOR-ACTIVE: #ececec}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-BTN-ACTIVE-MASK: rgba(255, 255, .1)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-BTN-DEFAULT-ACTIVE-BG: rgba(255, 255, 255, .126)}}@media(prefers-color-scheme:dark){.wx-root:not([ data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-DIALOG-LINE-COLOR: rgba(255, 255, 255, .1)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--APPMSGCARD-BG: #1E1E1E}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--APPMSGCARD-LINE-BG: rgba(255, 255, 255, .07)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-BG-COLOR-ACTIVE: #373737}}@media(prefers-color-scheme::dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-BG-6: rgba(255, 255, 255, .1);--weui-ACTIVE-MASK: rgba(255, 255, 255, .1)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-REDORANGE: #ff6146;--weui-BG-0: #111;--weui-BG-1: #1e1e1e;--weui-BG-2: #191919;-- weui-BG-3: #202020;--weui-BG-4: #404040;--weui-BG-5: #2c2c2c;--weui-FG-0: rgba(255, 255, 255, .. 8);--weui-FG-HALF: rgba(255, 255, 255, .6);--weui-FG-1: rgba(255, 255, 255, .5);--weui-FG-2: rgba(255, 255, 255, .3);--weui-FG-3: rgba(255, 255, 255, .1);--weui-FG-4: rgba(255, 255, 255, .15);--weui-FG-5: rgba(255, 255, 255, .1);--weui-RED: #fa5151;--weui-ORANGERED: #ff6146;--weui-ORANGE: #c87d2f;--weui-YELLOW: #cc9c00;--weui-GREEN: #74a800;--weui-LIGHTGREEN: #3eb575;--weui-FIRE: #07c160;--weui-BLUE: #10aeff;--weui-INDIGO: #1196ff;;--weui-PURPLE: #8183ff;--weui-WHITE: rgba(255, 255, 255, .8);--weui-LINK: #7d90a9;--weui-TEXTGREEN: #259c5c;--weui-FG: #fff;--weui-BG: #000;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6);--weui-TAG-BACKGROUND-RED: rgba(250, 81, 81, .1);--weui-TAG-TEXT-ORANGE: rgba(250, 157, 59, .6);--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: rgba(6, 174, 86, .6); --weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .) 1);--weui-TAG-TEXT-BLUE: rgba(16, 174, 255, .6);--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(255, 255, 255, .5);--weui-TAG-BACKGROUND-BLACK: rgba(255, 255, 255, .05)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--discussInput-BG: rgba(255, 255, 255, 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#1196ff;--weui-PURPLE: #8183ff;--weui-WHITE: rgba(255, 255, 255, .8);--weui-LINK: #7d90a9;--weui-TEXTGREEN: #259c5c;--weui-FG: #fff;--weui-BG: #000;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6); --weui-TAG-BACKGROUND-RED: rgba(250, 81, 81, .1);--weui-TAG-TEXT-ORANGE: rgba(250, 157, 59, .6);--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: rgba(6, 174, 86, .6);--weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .1);--weui-TAG-TEXT-BLUE: rgba(16, 174, 255, .6);--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(255, 255, 255, .5);--weui-TAG-BACKGROUND-BLACK: rgba(255, 255, 255, .05)}}@media(prefers-color-scheme: dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){-appmsgExtra-BG: #121212}}*{margin:0; padding:0}.rich_media_content *{max-width:100%!important; box-sizing:border-box!important;-webkit-box-sizing:border-box!important; word-wrap:break-word!important}.rich_media_content p{clear:both; min-height:1em}td p{margin:0; padding:0}

div.autoTypeSetting24psection > p,div.autoTypeSetting24psection > section{margin-bottom: 24px;}