In contrast, most previous studies have not examined fetal 3D measures during pregnancy and have only linked total weight gain across pregnancy, not just in the first trimester, with birthweight.

Second Trimester (Weeks 13-26) The second trimester is when most women will see significant weight gain. On average, women gain about a pound per week during this period, totalling 12 to 14 pounds ...

WATCH ABOVE: How much weight gain during pregnancy is considered 'normal'? – Dec 16, 2019 From what your bump looks like to the foods you crave, every pregnancy is vastly different from the next.

Wagner, K. A., et al. (2025) Relationship between gestational weight gain with fetal body composition and organ volumes in the NICHD Fetal 3D Study: A prospective pregnancy cohort. The American ...

How much you gain depends greatly on your weight before pregnancy. The Institute of Medicine recommends that underweight women gain 12,5 to 18kg, normal-weight women gain 10 to 15kg and overweight ...

Study details and methods The study analyzed data from over 2,600 singleton pregnancies, focusing on maternal weight before and during pregnancy. Up to five 3D ultrasound scans were used to assess ...

Fetuses of pregnant people who gained excess weight in the first trimester of pregnancy show signs of excess fat distribution in the upper arm and in the abdomen, according to a study by ...

Prior research has only looked at weight gain across an entire pregnancy, not specifically in the first trimester. “The findings suggest that the timing of weight gain, instead of total weight gain, ...