Weight gain during pregnancy

Weight gain during pregnancy

During her pregnancy, weight gain of a woman is generally
between 10 and 14 kg.

However, the weight gain recommended for pregnant women is calculated based on the BMI (Body Mass Index) of the mother before pregnancy.

Indeed, every woman has a different morphology is its original weight to determine the recommended weight gains during pregnancy, so that everything goes well for the mother as for the baby.

>> Calculate the recommended pregnancy weight gain with monBeBé tools.

The principle of BMI

To calculate your BMI is very simple, you simply divide your weight (in kg) by your height in meters and squaring, which gives the following equation:
BMI = Weight / height²

It is considered that the "healthy weight" A woman is a BMI between 20 and 25. For example, a woman measuring 1.70 and weighing 58 kg has a BMI of 20.

The BMI classification

Classification	IMC (kg/m2)
SLIMMING	<18,5
Normal	18,5 à 24,9
overweight	25 à 29,9
Obesity	> 30
massive obesity	> 40

The distribution of weight gain during pregnancy

Your average weight gains are distributed as follows:

	8 weeks	18 weeks	weeks	38 weeks
Fetus	0,005 kg	0,250 à 0,350 kg	1,200 à 1,800 kg	3,060 et 3,780 kg
Placenta	0,02 kg	0,155 à 0,185 kg	0,404 à 0,456 kg	0,628 à 0,672 kg
Amniotic liquid	0,03 kg	0,318 à 382 kg	0,710 à 0,790 kg	0,795 à 0,805
Uterus	0,140 kg	0,302 à 0,338 kg	0,572 à 0,628 kg	0,933 à 1,007 kg
bosom	0,045 kg	0,166 à 0,193 kg	0,342 à 0,378 kg	0,400 à 0,410 kg
Blood	0,1 kg	0,550 à 0,650 kg	1,230 à 1,370 kg	1,245 à 1,255 kg
Water retention	-	0,027 et 0,033 kg	0,075 à 0,085 kg	1,520 à 1,840 kg
fat reserves	0,310 kg	1,876 à 2,224 kg	3,337 à 3,623 kg	3,331 à 3,358 kg
Total	0,650 kg	3,644 à 4,355 kg	7,870 à 9,130 kg	11,912 à 13,127 kg

This is indicative values, but every woman has a different morphology, as we have seen previously.In early pregnancy, you sometimes have the impression, however, to lose weight. This is due largely to small discomforts that causes pregnancy, such as nausea and vomiting.

The impact of BMI on pregnancy

>> If your BMI before pregnancy is less than 20: Your body weight is insufficient. You risk of delivering a premature baby and / or delivering a baby of low weight (<2.5 kg), which increases the problems of development of the newborn. Your doctor will probably with the help of a nutritionist, prescribe a strengthening diet.

>> If your BMI before pregnancy, between 20 and 25: Congratulations! This is what is called the "healthy weight".

>> If your BMI before pregnancy, is greater than 25: Your body weight is too high. This overweight may indeed be detrimental to your health, as it relates in particular to problems of hypertension. You also risk giving birth to a baby too large (> 4 kg), which sometimes includes asphyxiation hazards and may require a caesarean section.

IMC	Recommended weight gains
IMC < 20	12,5 à 18,0 kg
IMC entre 20 -27	11,5 à 16,0 kg
IMC > 27	7,0 à 11,5 kg

Weight gain during pregnancy is of course due to the increase of the baby weight but also the weight of the uterus, placenta, breasts, amniotic fluid and blood volume and fat reserves.