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Weight gain during pregnancy by weeks

Increasing the amount of of the future mother’s subcutaneous fat layer is an indispensable condition for the safe and proper development of the baby during the embryonic period. Usually, younger pregnant women gain less weight than older women. But the gestation of, for example, twins or even triplets significantly increases the weight indices in mothers of any age. In each of these cases, a pregnant woman observes changes in her body mass, which are not always standard.

How to correctly weigh a pregnant woman

To determine her weight, the pregnant woman must get used to properly organized weighing:

How to measure weight during pregnancy
  • It is recommended to take a body weight measurement once a week – you should try to do this at the same time before breakfast, which increases the accuracy of further calculations and dynamic evaluation of results.
  • Weighing is done after emptying the bladder and colon.
  • Use the same scale.
  • It’s better to wear a specially selected outfit every time (deducting its weight later) or wear nothing at all.
  • To ease the calculation and tracking of body mass it’s better to note the results in a special notebook.
[attention type=yellow]The above-provided tips are suitable only if the weighing of a pregnant woman is done at home with your own scale. But in case the expectant mother only has this done at the obstetrician-gynecologist appointment, it’s better do it at approximately the same time, and empty the bladder again right before getting on the scale.[/attention]

Body mass index chart

Body mass index chart

All trained professionals and pregnant women use the calculation of the body mass index in evaluating the results of the obtained values of body mass. This technique allows not only to simplify all calculations, but just as easily to identify if you are overweight or underweight. There are special calculators for the computation the BMI. They use the following data:

  • weight before pregnancy (in kg);
  • height (in cm);
  • the presence or absence of twins;
  • start date of last menstrual period;
  • present-time weight (in kg).

In this manner, you can calculate a gain in body mass for a certain period of time from the beginning of pregnancy.

What pregnancy weight gain consists of

What pregnancy weight gain consists ofIn our case, the weight consists not only of the sum of all organs and body fluids, but also of reserves of body fat. In addition to all usual formations of a certain amount of subcutaneous fat there is a growth of a new organism in the mother’s body, whose mass steadily increases with each week of his prenatal development.

[attention type=yellow]Do not forget that the uterus increases in size to ensure the normal development of the fetus, breast milk forms in the mammary glands, the placenta is generated and grows, there are the ever-present amniotic fluids, fetal membranes and the umbilical cord, which also contribute to the level of body weight.[/attention]

Factors that influence weight gain during pregnancy

  • Presence and severity of early toxicities affect body weight during gestation, because an active loss of fluids through frequent vomiting leads to dehydration and weight loss.
  • Pathological variants of the course of pregnancy, such as polyhydramnios and the presence of obvious edema, may promote weight gain.
  • Gestation of twins or even triplets causes a more pronounced increase in body weight than a singleton pregnancy.
  • The nature of the food, frequency and quantity of ingested liquids in pregnancy have a strong impact on the woman’s metabolism, which has a direct impact on the formation of the fat layer, the growth of the placenta, uterus, and the formation of milk.

The rate of weight gain during pregnancy, by week

The rate of weight gain during pregnancyHow much weight is gained during pregnancy? In women with a normal physical condition and right complexion, the increase in body mass over the entire period of gestation, according to dynamic data of mass index evaluation, should be 10-15 kg, including the baby. In cases with reduced mass the normal gain level is considered to be 12 to 18 kg, 6 to 10 kg if overweight, and 4 to 9 kg if obese.
If a woman expects a big addition to the family, the standards of weight gain during pregnancy are slightly different from the index above. For a normal body mass the gain values range from 15 to 25 kg, 14 to 24 kg if overweight, and 10 to 19 kg if obese.

[attention type=yellow]Thus, the skinnier the pregnant woman, the more weight she will gain during gestation of the baby. On the contrary, ladies with excess starting weight tend to have lower weight gain numbers.[/attention]

Weight gain during pregnancy by weeks: table

Table of weight gain during pregnancy by weeksFor convenience of the evaluation and analysis of the pregnant woman’s weight gain, specialists have developed standards of weight gain during pregnancy, by weeks.

They are also dependent on the mother’s constitution and her personal BMI, but most importantly, they reflect the detailed weight gain for each term of pregnancy. This greatly eases not only the work of obstetrician-gynecologists, but also an understanding of the pregnancy for the future mother herself.

The change in weight of the pregnant woman depends on the characteristics of her metabolism, the nature of her diet and the needs of the fetus, which only confirms the pure individuality of weight data parameters.

For women of normal body weight:

  • 1-17 weeks – gain 2.35 kg;
  • 17-23 weeks – gain 1.55 kg;
  • 23-27 weeks – gain 1.95 kg
  • 27-31 weeks – gain 2.11 kg;
  • 31-35 weeks – gain 2.11 kg;
  • 35-40 weeks – gain 1.25 kg;
  • for the whole period – gain 11-15 kg.

For overweight women:

  • 1-17 weeks – gain 2.25 kg;
  • 17-23 weeks – gain 1.23 kg;
  • 23-27 weeks – gain 1.85 kg;
  • 27-31 weeks – gain 1.55 kg
  • 31-35 weeks – gain 1.55 kg;
  • 35-40 weeks – gain 1.55 kg;
  • for the whole period – gain 7-11 kg.

For obese women:

  • 1-17 weeks – gain 1.5 kg;
  • 17-23 weeks – gain 0.75 kg;
  • 23-27 weeks – gain 1.3 kg;
  • 27-31 weeks – gain 0.65 kg
  • 31-35 weeks – gain 0.65 kg;
  • 35-40 weeks – gain 0.45 kg;
  • for the whole period – gain 6 kg or less.

For women with reduced body weight:

  • 1-17 weeks – gain of 3.25 kg;
  • 17-23 weeks – gain of 1.77 kg;
  • 23-27 weeks – gain of 2.1 kg;
  • 27-31 weeks – gain 2.35 kg
  • 31-35 weeks – gain 2.35 kg;
  • 35-40 weeks – gain 1.75;
  • for the whole period – gain 12-19 kg.

During multiple pregnancy gestation:

  • 1-17 weeks – gain 4.55 kg;
  • 17-23 weeks – gain 2.6 kg;
  • 23-27 weeks – gain 3 kg;
  • 27-31 weeks – gain 2.35 kg
  • 31-35 weeks – gain 2.35 kg
  • 35-40 weeks – gain 1.55 kg;
  • for the whole period – gain 15-20 kg.

Weight loss during pregnancy

A reduction in body mass in pregnant women should be reviewed each trimester.

  • In the first trimester, weight reduction is often a clear sign of early toxicities, during which a pregnant woman loses weight because of dehydration and frequent refusals of full meals.
  • For the second and third trimesters the causes of weight reduction are very similar and resulting from improper nutrition (often due to fear of gaining extra weight, which is totally unjustified and dangerous for the baby’s future), or the presence of somatic pathology of organs or systems.

In either case, a woman should always consult with her obstetrician-gynecologist.

Pathological weight gain in pregnant women

Pathological weight gain in pregnant womenExcessive weight gain during pregnancy is not safe. The reasons for its occurrence can be severe edema due to slowed removal of fluid from the body, the above-mentioned polyhydramnios, and the presence of hypothyroidism with reduced release of thyroid hormones into the blood.

In the event that the gynecologist detects the presence of such an excessive weight gain during pregnancy, untimely and inappropriate assistance may lead to the development of preeclampsia during pregnancy, diabetes mellitus and Rh conflict between the baby and the woman.

[attention type=yellow]Of course, these factors are abnormal for both mother and fetus. But even physiological reasons (for example, the mother’s advanced age, and genetic predisposition to be overweight) are no less dangerous in this respect.[/attention]

Adequate treatment of a pathological increase in weight during pregnancy is:

  • a balanced diet without high-calorie foods;
  • limitation of water consumption;
  • complete lab work and diagnostic examination of the woman;
  • regular walks and reasonable home exercises;
  • the introduction of some fasting days.

Fasting days for pregnant women

Fasting days for pregnant womenThis type of therapy for the prevention of excessive weight gain in pregnant women is advised to be performed no more than once or twice a week.

Fasting days consist of foods of one type and water in an amount of about 1 liter. The future mom can experiment and decide on her own fasting menu, however, it’s worth discussing your plans with your gynecologist.

Examples of fasting day menus:

  • Vegetables (zucchini or pumpkin with the addition of a small amount of sour cream).
  • Apple (1 kilogram of fresh or baked apples for 6 meals).
  • Fruit (using any desired fruits with a doctor’s approval).

Video about weight gain during pregnancy

For a more complete familiarity with the subject of weight gain during pregnancy there is a video in which we highlight the common reasons for weight gain, rules and recommendations on weighing and calculation of the mass index, and the standard weight gain numbers for each week of the embryonic period of the fetus.

[attention type=yellow]A broad discussion helps you to fully understand the table of weight gain during pregnancy, so do not hesitate to ask and share your own experiences with others. Your reasoning will not only help you but also those planning to become pregnant, which is important for their mental preparation for the pregnancy.[/attention]

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