It is normal to gain weight in the first trimester. Pregnant women are special and need special attention in diet, especially those who are just pregnant. If you don't pay attention to your diet, it may lead to miscarriage. The following is how much weight gain is normal in the early pregnancy.
How much weight gain in early pregnancy is normal? 1 In the first trimester, the weight gain is not obvious, because at this time, the baby mainly develops some nervous systems and some important organs are formed. It is normal to grow three or five kilograms in the first trimester. If you are fat at ordinary times, you have exceeded the normal body mass index. Weight gain during the whole pregnancy is about12kg. If it is increased too much, there will be safety hazards for both the baby and the mother.
How much weight should I gain every week during pregnancy?
Weight gain during pregnancy is a very interesting problem. We all know that women need to take in more nutrients to give birth to new life after pregnancy, but this degree is difficult to grasp and they often get fat. Some women who love beauty very much or pay great attention to health will strictly control obesity, but most people will still get fat helplessly during this period.
Especially in China now, pregnant women are taken care of in every possible way at home. They eat too much and exercise too little, so it is difficult to get fat. Even though she knows that being so fat is not necessarily good, in this environment, women who are not very determined tend to compromise with the environment.
Pregnant women lack normal weight standards.
Why do universal health concepts such as eating less, exercising more and being slim completely fail in pregnant women? It should be said that a very important reason is the lack of standards. Human beings have a standard of normal weight from newborn, preschool, adolescence to adulthood, which is the body mass index of adults. But this set is completely ineffective for pregnant women, and pregnant women must be heavier than usual.
Medically speaking, excessive weight gain during pregnancy is related to over-gestational-week infants, gestational diabetes, premature delivery, caesarean section and childhood obesity. On the contrary, too little weight gain during pregnancy also has many adverse effects, such as low birth weight, small for gestational age, premature delivery and so on. Therefore, women's weight gain during pregnancy must have a standard range. Within this range, pregnant women have no pregnancy complications, and the probability of giving birth to normal newborns is the highest.
This standard can be used as a reference for pregnant women who want to control their weight, and it can also remind overweight pregnant women that there is always a voice in their hearts saying, hey, it's not good to be fat again …
BMJ magazine published the calculation formula of weight gain in different gestational weeks.
Now, the standard is finally born! Recently, a formula was published in BMJ magazine. This formula can calculate the normal range of women's weight gain in any pregnancy after 14 weeks, provided that women's body mass index in the first trimester is within the normal range (18.5 ~ 24.99). It can be said that this is a remarkable progress in the field of human health. Before revealing the formula, let's first understand how this formula was born.
This project is a part of Intergrowth-21ST (21ST Century International Federation for Fetal and Neonatal Growth), which aims to complete the international standards for fetuses, newborns and premature infants at all growth stages, and it has been partially implemented in eight countries (Brazil, China, India, Italy, Kenya, Oman, Britain and the United States).
This project was jointly completed by Professor Leila Cheikh Ismail from Oxford University, Professor Deborah C Bishop, Professor Pang from Peking University, China, and experts and scholars from other countries.
Specific formula
The pregnant women recruited in this project are at an ideal level in health, nutrition, education, social economy, etc., and they are not exposed to dangerous environment during pregnancy to ensure the fetus to grow up in an ideal environment. *** 13 108 pregnant women entered the initial screening, and only 3097 people finally reached the standard. The research formula is as follows:
Mean; ln(GWG)= 1.382972-56. 14743×GA-2+0.2787683×GA 0.5
Standard deviation (SD); ln(GWG)= 0.250 199373 1+ 142.4297879×GA-2-6 1.45345×GA-2×ln(GA)
GWG: Weight gain (kg); GA: gestational age; Ln: logarithm.
The formula for calculating GWG of any percentile is ln(GWG)= mean +KSD.
K is the z value in standard score. You can look up the Z value table according to the required percentile to determine the required K value. For example, when calculating the weight gain of the 97th percentile, look up the Z value table 0.97, and the corresponding Z value is 1.88, then the K of the 97th percentile is 1.88, the K of the 3rd percentile is-1.88, and the K of the 50th percentile is 0. Generally, the 3rd percentile and the 97th percentile are regarded as the lowest and highest values of the normal value.
For example, calculate the normal range of weight gain at 34 weeks of pregnancy.
Average level: GWG = EXP in 50th percentile ((1.382972-56.14743× 34-2+0.2787683× 340.5)+(0× (0.2501999)
Lowest normal value: gwg = exp ((1.382972-56.14743× 34-2+0.2787683× 340.5)+(-1.88× (0.255)
Normal maximum: gwg = exp ((1.382972-56.14743× 34-2+0.2777683× 340.5)+(1.88× (0.27).
How much weight gain in early pregnancy is normal? 2. Weight gain standards during pregnancy.
Normal weight range of pregnant mothers: In order to judge how much weight you want to gain during pregnancy is reasonable, we need the body mass index value. The body mass index before pregnancy is the body mass index, which is often used to estimate the weight standard of pregnant mothers during pregnancy. We can also calculate it through a simple formula.
Normal weight range of pregnant mothers: In order to judge how much weight you want to gain during pregnancy is reasonable, we need the body mass index value. The body mass index before pregnancy is the body mass index, which is often used to estimate the weight standard of pregnant mothers during pregnancy. We can also calculate it through a simple formula.
Body mass index = weight (kg) ÷ height (m) 2
For example, if the bird's body mass index = 50 ÷ (1.6×1.6) = 19.5, then the bird's body mass index is equal to19.5.
Pregnant mothers' body mass index before pregnancy can be divided into three categories: lean, standard and super heavy.
Then you know whether you need to gain weight before pregnancy, and there is a growth range.
Body mass index before pregnancy:
Thin type: body mass index = 18.5 and below.
It is suggested to gain weight during pregnancy 12KG- 15KG.
Thin mothers may not gain weight during pregnancy because of physical reasons. Therefore, it is very important to improve the quality, eat more high-quality food and pay attention to a balanced and diverse diet when the quantity may be insufficient.
Standard type: body mass index = 18.5 to 22.9.
It is suggested to gain weight during pregnancy 10KG- 14KG.
Standard mothers usually weigh within the standard range, and the most common mistake during pregnancy is to eat a lot to make up for it, so that they gain weight quickly. It is recommended that my mother check her weight more at ordinary times and adjust it if she finds that she is gaining weight quickly.
Obese type: body mass index =23 or above.
It is recommended to gain 7KG- 10KG during pregnancy.
Obese mothers are overweight and prone to gain weight during pregnancy, so they will gain less weight during pregnancy. Too much body fat will also affect the baby's development, so it needs to be checked frequently to prevent pregnancy complications.
Where did all the weight gain go?
Don't think that every weight you gain is on your baby, it's only a small part! And your blood, muscles, body fluids and tissues are also increasing to support the growth of the fetus.
2. The essential nutrition of pregnant women is basically absorbed through diet. As for snacks, they can be regarded as part of dinner, but they can't completely replace dinner. Try to choose low-calorie ones.
3, do not hunger strike during pregnancy, be sure to eat three meals a day, otherwise the fetus may be malnourished.
Proper exercise and rest are very important, but you should consult a doctor before starting the exercise plan. If you don't have the habit of exercise, walking is the safest for yourself and your fetus.
Try to absorb nutrition from a balanced diet every day. Nutritional supplements such as folic acid and iron should be used only when the daily diet is not fully provided. "I don't want to be too fat to eat dinner. I use nutritional supplements to supplement my nutrition." This idea is wrong.
6. Diet foods are forbidden, because many diet foods contain ingredients that stimulate the intestines, which will cause diarrhea and have adverse effects on themselves and the fetus.
Pregnant mothers see which of the following table is their body mass index, and then control their weekly weight gain rate in the middle and late pregnancy and the overall weight gain range throughout pregnancy through daily diet and exercise.
How much weight gain in early pregnancy is normal? Three principles of weight management during pregnancy.
First pregnancy 3-4 months
At the beginning of pregnancy, there are many changes in the body, but the weight should be managed from this time.
Diet-* During this period, expectant mothers with poor appetite can try to choose what they want to eat.
Drinking more water and eating more fruits and vegetables containing fiber can avoid constipation. Be sure to record the food and quantity you eat every day, and be careful not to overeat or consume too many calories.
Work and rest-* At the beginning of pregnancy, most expectant mothers will feel easily tired, but try to keep a regular work and rest, sleep and get up regularly.
If your health permits, you might as well keep simple housework and have the opportunity to walk more. But if there are signs of miscarriage, it should be avoided.
Weight Record-* Get into the habit of measuring your weight every week and record the changes. Can effectively grasp the increase and decrease of weight.
5-7 months in the second trimester.
When you enter the second trimester of pregnancy, avoid the sudden surge of food intake caused by the disappearance of initial discomfort, and take advantage of this time to engage in more exercise beneficial to pregnant women, so as to effectively manage the weight at this stage.
Diet-* Eat regularly and quantitatively, and try to avoid eating too much after midnight or 9 o'clock. Don't limit yourself to eating only two meals a day.
Dietary diaries should still be recorded every day.
Work and rest-* Usually at this time, the fetus enters a regular period, and the expectant mother can start to arrange some moderate and familiar exercises, such as walking for 30 minutes after lunch and dinner, or doing health gymnastics for pregnant women, or even swimming.
Regular work and rest should still be maintained, but try to keep yourself away from the pressure of life or work and learn to relax.
Weight Record-* You can start to measure your weight at a fixed time every morning or before going to bed at night and record it in detail.
Late pregnancy 8-9 months
The complicated physical condition in the third trimester makes many expectant mothers neither sit nor stand, which affects their willingness to exercise and has great ups and downs in diet.
Diet-* Avoid irregular eating habits that start eating more and less because of impetuous mood.
Although the concept of "one person eats two people to supplement" is correct, if your activity momentum is not great, eating 1 person is enough. Dietary diaries should still be recorded every day.
Work and rest-* During pregnancy, many expectant mothers do enjoy many privileges without having to do it themselves. But using the writer's work to exercise and stretch can also consume some calories, which is helpful for weight management.
Try to keep a regular life schedule, don't stay up late, sleep as much as possible, and don't be too sleepy. If you have insomnia at night, you'd better find time to sleep and rest during the day.
Weight record-* Daily maintenance, weighing at fixed time and making detailed records, observing the weight gain every week according to the records, and carrying out control and management.
The pregnancy and delivery period is 10 month.
When you enter the last stage of pregnancy, you may give birth at any time, so keep strict management of your weight and don't fall short.
Diet-* may occur at any time. Control your appetite and don't eat too much.
The body is getting bloated, try to choose' less salt dishes'.
Combine work and rest-* It is best to give yourself a fixed rest time of about 30 minutes every morning and afternoon.
If you are in normal health, you may wish to continue to exercise for pregnant women, such as housework, swimming and walking. This will make the production process smoother.
Weight record-* Continue to record the weight in detail every day, and don't increase too much weight control in the last month.