hello everyone!
My name is Pastan8!
[A baby's birth weight can indicate how difficult their life will be】
It is believed that newborns weighing less than 2500g are susceptible to various diseases throughout their entire lives (DOHaD thinking).★The key to a healthy baby is the mother's health.
*DOHaD is a theory that states that development from fetal to early childhood affects health and susceptibility to disease in adulthood.Personally, I would like my child to be a complete health fanatic from the time of conception until the age of four!
Realization: If a mother does not gain weight properly during pregnancy, the babyunderweightThe risk of this occurring increases.
Table 1. Recommended weight gain during pregnancy (40 weeks)
|
BMI during pregnancy (kg/m2)
|
<18.5 | 18.5-24.9 | 25-29.9 | 30-34.9 | 35-39.9 | 40≦ |
| Underweight Thin |
Normal weight standard |
Overweight overweight |
Obesity class Obesity level 1 |
Obesity class 2 Obesity level 2 |
Obesity class 3 Obesity level 3 |
|
| Japanese papers (Announced in 2021) |
12-15kg | 10-13kg | 7-10kg | Individual support (maximum 5kg as a guideline) | ||
| National Academy of Medicine (Released in 2009) |
12.5-15kg | 11.5-16kg | 7-11.5kg | 5-9kg | 5-9kg | 5-9kg |
First, take a look at this recommended weight gain during pregnancy (40 weeks):
For example, if you become pregnant,
If your BMI is 22, check the Normal weight column for 18-24.9.
This means that a weight gain of 10 to 13 kg in 40 weeks is appropriate (see Japanese paper).
In other words, gaining 0.25g to 0.325g of weight in a week is apparently the strongest thing in the universe.
So, I'll tell you something important...
If you don't gain enough weight, your baby is 1.81 times more likely to be born underweight (less than 2500 kg).
*Compared to pregnant women who gained the recommended amount of weight.
Research results
First, the conclusion:
[The lower the pre-pregnancy BMI, the higher the risk of low birth weight]
[Low weight gain during pregnancy increases the risk of low birth weight]
↓
[Pre-pregnancy BMI less than 18.5 and weight gain during pregnancy less than 70% of the recommended amount] then...
The risk of low birth weight (less than 2500 kg) is 1.81 times higher.
Please stop working, cleaning, driving, playing online games, breathing, etc. for a moment and take a look at the table below.
*The table was created using data from a paper published in the British Medical Journal.
The study subjects are mothers in low- and middle-income countries.
*The recommended weight gain during pregnancy is based on the standards of the National Academy of Medicine.
*"Adequacy of GWG" indicates the percentage of the recommended amount of weight gained during pregnancy.
If your body weight is below 70%, you are not gaining much weight, which increases your risk of various problems.
*Small for Gestational Age (SGA) refers to a newborn baby whose birth weight and height are extremely small for their gestational age. Specifically, this refers to a baby whose birth weight and height are in the bottom 10 (below the 10th percentile) out of 100 babies of the same gestational age.
Table 2. Weight gain and risks by BMI
| BMI (kg/m²) | Adequacy of GWG | low birth weight (LBW) | SGA | stillbirth |
|---|---|---|---|---|
| <18.5 | <70% | 1.81 times | 1.62 times | 2.30 times |
| 70% to <90% | 1.25 times | 1.27 times | 1.57 times | |
| ≤125% | 1.10 times | 0.83 times | 1.33 times | |
| 18.5–24.9 | <70% | 1.63 times | 1.44 times | 1.15 times |
| 70% to <90% | 1.24 times | 1.20 times | 1.06 times | |
| ≤125% | 0.86 times | 0.78 times | 0.98 times | |
| 25–29.9 | <70% | 1.54 times | 1.32 times | 0.94 times |
| 70% to <90% | 1.33 times | 1.20 times | 0.92 times | |
| ≤125% | 0.99 times | 0.84 times | 0.76 times |
So, the "weight" of your body is important.
Men, if you meet a thin woman, try talking to her about her weight.
*However, depending on how you start the conversation, you might get dropped on someone with a 100m run-up. Be a gentleman.
The lower the BMI before pregnancy, the more likely the baby is to have a low birth weight.
Take a look at this other Japanese paper.
Table 3. Birth weight by BMI
| BMI (kg/m2) |
17-18.4 | 18.5-19.9 | 20-22.9 | 23-24.9 | 25-27.4 |
| Birth weight | 2827g ± 479g | 2881g ± 481g | 2922g ± 508g | 2947g ± 537g | 2966g ± 552g |
| Gestational weight gain (GWG) at 40 weeks | 11.0kg ± 3.5kg | 10.9kg ± 3.5kg | 10.8kg ± 3.8kg | 10.3kg ± 4.4kg | 9.5kg ± 4.6kg |
What I want to say
If a mother has a low BMI (less than 18.5) before pregnancy, her baby is more likely to be born underweight.
If a mother does not gain weight during pregnancy, the baby is more likely to be born with a low birth weight.
We believe that changing people's perceptions of "weight" will lead to positive behavior.
I hope that those who will become mothers and fathers in the future, and those around them, will all get to know each other and help each other.
Whether you're living a happy life or someone who is tormented by their past or lives with jealousy and hatred for others, I think that deep down, everyone has the desire to be happy and to be loved by someone.
If you have the opportunity to interact with a baby, why not try sharing your underlying feelings with your baby?
The choice is up to you.
…
However, there are also adverse effects of gaining too much weight during pregnancy.
For example, Cesarean section can lead to poor quality gut flora in babies.
There are reports that the quality of the intestinal flora affects brain development (such as brain volume increase or decrease).
How a baby's brain develops seems to be related to their future "sensitivity to happiness," "proneness to mental illness," "aggression toward others," etc. I would like to post about this topic again sometime.
Reference URL
Suboptimal gestational weight gain and neonatal outcomes in low and middle income countries: individual participant data meta-analysis, 2023, British Medical Journal,
■Naho Morisaki, Chie Nagata, Seung Chik Jwa, Haruhiko Sago, Shigeru Saito, Emily Oken, Takeo Fujiwara, Pre-pregnancy BMI-specific optimal gestational weight gain for women in Japan, 2017, Journal of Epidemiology, https://www.jstage.jst.go.jp/article/jea/27/10/27_JE86/_pdf,
■Naho Morisaki, Aurélie Piedvache, Seiichi Morokuma, Kazushige Nakahara, Masanobu Ogawa, Kiyoko Kato, Masafumi Sanefuji, Eiji Shibata, Mayumi Tsuji, Masayuki Shimono, Toshihiro Kawamoto, Shouichi Ohga, Koichi Kusuhara, and the Japan Environment and Children's Study Group, Gestational Weight Gain Growth Charts Adapted to Japanese
Pregnancies Using a Bayesian Approach in a Longitudinal Study:
The Japan Environment and Children's Study, 2021, Journal of Epidemiology, https://www.jstage.jst.go.jp/article/jea/33/5/33_JE20210049/_pdf/-char/en,
■Lijun Wang, Xiaoyu Zhang, Tingting Chen, Jun Tao, Yanduo Gao, Li Cai, Huijun Chen, Chuanhua Yu, Association of Gestational Weight Gain With Infant Morbidity and Mortality in the United States, 2021, JAMA Network, https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2787597,
■Centers for Disease Control and Prevention, https://www.cdc.gov/index.htm,
bonus
2024 has finally begun!
So... what kind of year will this be?
I will do my best to provide information to everyone (lol)
Speaking of which, when I was walking around Ueno on January 4th, I noticed something and took a photo.
If anyone has any idea what it is, I might put a penny in a large cardboard box and send it by mail!
*The answer is below the image.
I'd like you to take a look at the elderly couple (probably in their 70s) in the middle of the photo.
The husband was holding his wife's hand to prevent her from falling down the stairs.
We continued holding hands as we walked.
It feels quiet, but
I sensed something like a strong conviction from the husband to "protect his wife."
It's been a while since I've seen a gentleman.
I'm sure there must have been daily dramas that deepened their bond.
What do you think when you see an elderly couple?
…You might realize something important.