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The enlarging uterus, growing fetus, placenta, amniotic fluid, normal increase in body fat, and increase in water retention all contribute weight gain during pregnancy. The amount of weight gain can vary from 5 pounds (2.3 kg) to over 100 pounds (45 kg). In the United States, the range of weight gain that doctors generally recommend is 25 ...
During pregnancy, women of an average pre-pregnancy weight (BMI 18.5-24.9) should expect to gain between 25–35 pounds (11–16 kg) over the course of the pregnancy. [32] Increased rates of hypertension, diabetes, respiratory complications, and infections are prevalent in cases of maternal obesity and can have detrimental effects on pregnancy ...
Low pre-pregnancy BMI increases the risk of low birth weight infants, but the risk can be balanced by an appropriate gestational weight gain from 12.5 to 18.0 kilograms in total, or about 0.5 kilogram each week in the second and third trimesters.
Measurement of the belly being performed by a pregnant woman during her pregnancy. The amount of healthy weight gain during a pregnancy varies. [102] Weight gain is related to the weight of the baby, the placenta, extra circulatory fluid, larger tissues, and fat and protein stores. [16] Most needed weight gain occurs later in pregnancy. [103]
Between 2010 and 2014, babies in the United States had an approximately 70% survival rate when born under weight of 500 g (1.10lb), an increase from a 30.8% survival rate between 2006 and 2010. [15] A baby's chances for survival increases 3 to 4 percentage points per day between 23 and 24 weeks of gestation, and about 2 to 3 percentage points ...
The EUROPOP study showed that preterm birth is not related to type of employment, but to prolonged work (over 42 hours per week) or prolonged standing (over 6 hours per day). [97] Also, night work has been linked to preterm birth. [98] Health policies that take these findings into account can be expected to reduce the rate of preterm birth. [95]
The IOM has recommended the ranges of weight gain to be 12.5–18 kg, 11.5–16 kg, 7-11.5 kg, and 5–9 kg respectively. That is, the smaller the BMI pre pregnancy, the more weight a woman is expected to gain during her pregnancy. [3]
The United States rate of unintended pregnancies is higher than the world average, and much higher than that in other industrialized nations. [33] Almost half (49%) of U.S. pregnancies are unintended, more than 3 million unintended pregnancies per year. [34] [35] The rate of unintended pregnancy is even higher among the poor. In 1990 about 44% ...