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Weight gain during pregnancy

Prenatal care that is done by women during pregnancy not only interacts the health of the mother but also reflects onto the health of her fetus/baby. Within the parameters to control we can find the weight of pregnant women. Some years ago, in most of the countries, weight control was so strict, that measuring the scales for women was a tense moment for most of young mothers (I guess we could blame this on fashion). Today we take into account the weight of the pregnant women, not only related to aesthetic paradigms, but also having in mind their nutritional status, as many complications in pregnancy may have as base a lack of adequate supply of nutrients. Likewise, fetal growth and development needs good maternal nutrition.

During pregnancy excessive weight gain is in fact justified, because pregnant women should increase their caloric intake with 300 kcal per day, to help the baby's growth and development. It should also be taken into account that during pregnancy physical activity declines as the child grows inside the mother's belly.

Weight gain will vary according to trimester of pregnancy. In the first three months the increase will be minimal, somen women can even lose weight if they have nausea or experience vomiting symptoms. Women that find themselves already in the second quarter, begin to gain weight steadily, at a rate of 1kg to 1.5 kg per month. In the last pregnancy months, the weight increase is more noticeable because this is the time when the baby gains more weight, at the expense of subcutaneous fat.


Progressive weight gain during pregnancy is achieved through a balanced and varied diet that includes foods that contain nutrients needed by the child for a good development, without consuming the reserves of the mother. The result of this increase will be the appropriate weight to have a child in good health.

Weight distribution - weight is distributed as follows:

Fetus: 3300gr to 3500gr
Placenta: 500gr to 700gr
Amniotic fluid: 800gr to 1000gr
Blood: 1000gr to 2000gr
Uterus: 1000gr
Mamals: 300gr to 500gr
Extracellular Fluid: 1500gr
Adipose tissue: 700gr to 2000gr

As we see from the above description, weight gain can be broken down into a maternal and fetal side. During the second trimester, the maternal component influences the weight gain process, and in the last trimester the fetal growth curve determines the weight gain for pregnant women.

To determine whether a pregnant woman has the right weight, during early pregnancy body mass index (BMI) is calculated, which is the relationship between weight and height. If this value is greater than 25, it indicates overweight. People having values of 30 or more are considered obese.

It should be noted that even in the case of obese persons, it is not considered desirable to lose weight during pregnancy.

Overweight or obese women during pregnancy may have adverse reactions which affect fetal vitality. In these patients is more frequent the appearance of diabetes and infants many have greater weight, which will most likely translate into a cesarean delivery.

Faced with an excessive increase in weight, the obstetrician may refer you (the pregnant woman) to a nutrition specialist for advice in dietary patterns or maybe even diet. Fetal development may be affected if the mother doesn't comply with food restrictions, especially in the last trimester of pregnancy , which is when babies grow the most. However, low-calorie diets are not indicated during pregnancy, even if the mother may be obese. It is generally advised to eat six times a day, including breakfast. Home-made diets are adviced with moderation.

Also counsult a physician in prenatal care, who will determine whether the weight gain curve is appropriate for each patient.


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Height Weight Chart - Weight Gain - Prenatal care done by women during pregnancy not only affects the health of the mother, but also of her baby. Within the parameters to control can be found the weight of a pregnant woman.

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