What is fetal weight?

A new study links fetal birth weight to the type of conception. According to the study, infants conceived using fertility treatments are significantly smaller than infants born after natural conception. The study included 1,700 women who gave birth to one child. Multiple pregnancies were not used in the study because multiple pregnancies tend to result in lower birth weight babies. The research study revealed that women utilizing fertility treatments to conceive gave birth to infants that were roughly 1/3 of a pound lighter than women who gave birth to infants conceived naturally.

The study group included about 460 women who were treated at a fertility clinic for fertility problems. The women were treated with in-vitro fertilization and fertility drugs. About 100 of the women conceived naturally, without treatment. The women in the study group were compared to just less than 1,300 women who conceived naturally without fertility problems. Prenatal ultrasound is used as a diagnostic tool and means of collecting information, such as fetal weight and due date. According to researchers from the University Hospital Brugmann in Brussels, the fetal ultrasound may not be the most effective method of estimating fetal weight.

Percentiles of Fetal Birth Weight

This table shows the percentiles of birthweights in grams by weeks of the pregnancy and gestational age. ... read more »

Fetal Weight Calculator

How big is your baby? This Fetal Weight Calculator can calculate the size and weight of your unborn baby and help you to keep track of your baby's growth in the womb. ... read more »

Estimated Fetal Weight Calculator

This fetal weight calculator will estimate the fetal weight of your baby! ... read more »

Losing The Baby Weight

No matter how much weight is gained or how healthy the woman has been eating, there will be at least a few pounds left over after the baby is born. ... read more »

Neighborhood Economics and Fetal Weight

Does the neighborhood where you live affect risk factors for very preterm birth? Researchers in France found a correlation between social factors present in certain neighborhoods and increased risk of very preterm birth. ... read more »

Fertility Treatment May Affect Fetus Size

A new study links fetal birth weight to type of conception. According to the study, infants conceived using fertility treatments are significantly smaller than infants born after natural conception. ... read more »

Infant Growth, SSRIs and Maternal Depression

Use of SSRIs during pregnancy to treat maternal depression has been shown to positively impact maternal quality of life during pregnancy and postpartum period, in previous studies. ... read more »

Development of Fetal Weight Chart

Currently fetal weight charts are universal. All charts show the same growth rate and estimated fetal weight and length based on hundreds of years of data, but according to a new study on infants born in Tanzania, not all fetal growth charts should be the same. ... read more »

Fetal Weight Estimation: US and MR Imaging

According to researchers from the University Hospital Brugmann in Brussels, fetal ultrasound may not be the most effective method of estimating fetal weight. ... read more »

Early Infant Growth and Asthma Risk

According to researchers in the Netherlands, fast infant growth during the first three months after birth may cause an increased risk of asthma. Fetal growth did not appear to have an effect on asthma risk. ... read more »

Calculator: How Much Does My Baby Weigh This Week?

Find out your baby's birthweight with this calculator which estimates weight by weeks of the pregnancy. ... read more »