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.

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 ...

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 ...

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, ...

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 ...

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 ...

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 ...

Its current guidelines say weight and height should be measured at the first appointment, but not repeatedly during pregnancy as a matter of routine. US guidelines do recommend keeping track of ...