Gestational diabetes & diabetes in pregnancy
Association of trimester-specific gestational weight gain with child body mass index (BMI) by maternal BMI categories in community-based healthcare organizations
Authors' conclusion
Among a diverse and systemically underserved pregnant population, GWG in the 1st and 2nd trimesters are most strongly associated with child BMI at age 5.
Study context
- Population
- Pregnant patients receiving care from a national network of community health care organizations; diverse and systemically underserved population
- Participants
- 5,721 / 5,667 / 3,213 / 1,344 / 692
- Exposure
- Trimester-specific gestational weight gain (GWG) rate and total GWG vs child BMI at age 5
- Normal weightn = 5,721
- Overweightn = 5,667
- Obesity class In = 3,213
- Class IIn = 1,344
- Class IIIn = 692
- Outcome
- Child BMI z-score and overweight and obesity status
- Follow-up
- Age 5
Methodological detailsstratified by pre-pregnancy BMI, linear or modified Poisson regression
- Stratified by pre-pregnancy BMI
- Linear or modified Poisson regression
Main finding
As reported in the abstract
Child BMI z-score at age 5 by GWG
1st trimester: increase in child BMI z-score per 1 kg/week greater weight gain, depending on BMI class
0.25-0.45
2nd trimester: increase in child BMI z-score per 1 kg/week weight gain; not significant in class III obesity
0.28 to 0.52
3rd trimester: weak, generally not significant change in BMI z-score per kg/week
−0.07 to 0.21
Observational data: associations, not effects.
Original publication
Association of trimester-specific gestational weight gain with child BMI by maternal BMI categories in community-based healthcare organizations. Int J Obes (Lond). Published 17 September 2026. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →