How tall can a child grow after menarche?

time:2022-12-02 author:Diet
How tall can a child grow after menarche?

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Can I predict my child's menstrual period?

Recently, many children come to the pediatric endocrinology clinic to check their height, and many of them don't come to see their menstruation for a long time. What's more, after many years of menstrual cramps, the height hardly increases, only to look at the height. So, how tall can you grow after menarche? After menarche, how long does it take for bone age to close? Does early menarche mean that you will not grow taller? What causes early menarche? ■One, look at the confession of parents and children first. Child 1: In the first 2 years after menarche, the height is almost 4-5cm, and then there is no growth. : After my menstrual cramps, I still grew ten centimeters. Patient Mother 3: The child has 4 years after menarche, and there is almost no height growth in the last 1 year... Different cultures, the same height anxiety. Let's take a look at what a foreign mother said: My daughter (patient 2) is now 12 years old. She is 153 cm tall and her bone age shows that bone growth is almost complete and the epiphysis is nearly closed. She had her first short period (menarche) 5-6 weeks ago. Our doctor told us she would only grow another 3-4 cm (if lucky) and she was very, very upset about it! In infancy and throughout childhood, she was at 50% of the population. Now she will stay below 3%!! Because she is developing prematurely. I am 160 cm and my husband is 182 cm. She has a physique like her father's, but between the ages of 2-10, she has periodic fever syndrome (PFAPA). Is there anything we can do now to slow her estrogen production, or at least help her grow beyond 3-4 cm while the epiphysis isn't fully closed yet? She will do anything possible for it. Photo: Different Cultures, Same Height Anxiety So, are these parents right? Does it make sense? ■ Second, after menarche, how tall can you grow? So, after menarche, how much can you grow in height? This question is not easy to answer. Studies have shown that the bone age of girls at menarche is between 12.5 and 14 years old, with an average of about 13 years old. So what does a bone age of 13 mean? Taking the population in Shanghai as an example (see the figure below), the bone age of a boy is 13 years old, which means that the current height has reached 91.6% of the adult height; the bone age of a girl is 13 years old, which means that the current height has reached 97.5% of the adult height. Then, the value of the current height ÷ the above percentile = adult lifetime height. Taking the foreign mother above as an example, assuming that the girl’s bone age is 13 years old and her current height is 153cm, then her adult lifetime height=153÷97.5%=157cm. This is why doctors say that girls can only grow "she will only grow 3-4 cm". Based on this, we calculated that the bone age of the girl in case 2 should be around 13 years old. The relationship between bone age and growth potential (Shanghai area) Then, assuming that the girl has better luck and the bone age is only 12.5 years old (the low value of the reference interval), then her adult lifelong height = 153÷95.9%=160cm; Has reached the age of 14 (the high value of the reference interval), then her adult lifetime height = 153÷98.8%=155cm. This situation is like what "patient mother 1" said at the beginning of the article, she has almost no height growth after her menarche. To sum up, after menstruation, the height growth space of women is about 2-7cm, and there are individual differences among different individuals. So, is it possible to have exceptions? It is possible that, according to the author's personal clinical experience (for reference only), the minimum bone age for menstrual cramps is 11 years old, then in this case, her adult lifetime height = 153÷91.5%=167cm. This situation is similar to "Patient's mother 2: After my menstrual cramps, I have grown more than ten centimeters" at the beginning of the article. However, it should be noted that this condition is less common in girls with normal puberty development, and is more common in 3 conditions: precocious girls, who have menarche before age 10 (living age); Irregular menstruation after (once, and then again after several months. This kind of child is usually very thin, and obese people tend to have advanced bone age); other pathological precocious puberty, such as hypothalamic hamartoma, may be very early in bone age When I was young, I had "menarche" (vaginal bleeding). For the vast majority of girls with normal pubertal development, after menarche, they only gain 2-7 cm in height, rarely exceeding 10 cm. ■ Three, after menarche, how long does it take to stop growing? What is the average age at menarche for girls? Girls usually get their menarche between the ages of 10 and 16, and most girls get their first period around the age of 12. Everyone develops at a different rate, and there is no right or wrong age for girls to start developing. Girls can menstruate anytime between the ages of 8 and 15. Usually (developmental progress is normal), the first menstrual period is 2 years after the breasts start to grow. What are the signs of a girl's period? It is impossible to accurately predict a girl's first menstrual cramp. About 6 months before menstruation, girls have breasts that are close to adult size, may have a large amount of clear or white vaginal discharge, or changes in mood. Do girls stop growing when they have their period? Girls don't stop growing immediately when they have their period, but as mentioned above, there is very limited room for height growth. How long can a girl last after her menarche? Girls will grow for about 2 years after menstruation is normal. The height growth is mainly concentrated in the first year of menstruation, and it begins to slow down significantly in the second year. After 2 years, the growth rate is very slow. Generally, girls stop growing completely between the ages of 15 and 17. That is to say, the fastest growth period for girls is usually between 12-13 years old, and the height of girls can increase by 6-10cm per year. Girls stop growing around age 14-15, about 2 years after menstruation. ■ Fourth, early menarche, does it mean that you will not grow taller? Studies have shown that during the 100-year period from 1860 to 1980, menarche has dropped from 15 to 16 years old to 13 to 14 years old. Figure: During the 100-year period from 1880 to 1980, the age of menarche showed a gradually lower age. In 2016, Papadimitriou A reviewed that the age of menarche is mainly caused by the interaction of genetics and various environmental factors. The authors describe the evolution of the age of menarche from prehistory (Paleolithic) to the present: data from skeletal remains suggest that menarche in Paleolithic women occurred between the ages of 7 and 13; during the Classical and Medieval periods, menarche Age is generally reported to be around 14 years, ranging from 12 to 15 years; in the early modern period, shortly after the Industrial Revolution, the age of menarche was significantly delayed due to worsening living conditions, with most studies reporting menarche at 15-16 years; During the 20th century, especially in the second half of the 20th century, in industrialized countries, the age of menarche declined significantly due to the improvement of socioeconomic conditions, occurring between the ages of 12 and 13; goes stable. Therefore, although some studies believe that the age of human menarche is gradually advancing, the average height of human beings is getting higher and higher, which suggests that early menarche may not necessarily lead to adult lifelong height damage. Clinically, it is necessary to determine whether early menarche will lead to impairment of adult lifelong height according to the actual situation of the child. Figure: The Lancet in November 2020: Distribution of heights in different countries and regions 5. What causes the earlier age of menarche? Regarding the earlier age of menarche, the most common view at present is that the occurrence of this trend is related to the development of human economy and the improvement of nutritional status (overnutrition). Today's children are better nourished than they were in the past, are taller and weigh more, and improved nutrition contributes to normal growth. The age of onset of puberty has also declined for lower-class and rural children. Other reasons may include: 1. General improvement in environmental conditions; 2. Evolutionary natural selection; 3. Gradual changes in world temperature; 4. Declining incidence of various infectious diseases; related); 6, sedentary lifestyle; 7, use of petrochemicals. Reference 1. J Pediatr Adolesc Gynecol. 2016 Dec;29(6):527-530.2.Lancet 2020;396: 1511–243. Source of this article: Pediatrician Kong Lingkai Author: Huang Xinjiang Responsible Editor: Xiang Yu Copyright statement that this article is reprinted and welcome to forward it to Moments - End - The medical community strives to be accurate and reliable when the published content is approved, but it does not care about the timeliness of the published content, and the cited materials (such as have) to make any commitments and guarantees, and do not assume any responsibility for the outdated content, the possible inaccuracy or incompleteness of the cited materials, etc. Relevant parties are requested to check separately when adopting or using it as a basis for decision-making.
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