Nonlinear association between pre-pregnancy body mass index and preterm birth in singleton pregnancies conceived with assisted reproductive technology
A nonlinear association between pre-pregnancy BMI and PTB was observed in women treated with ART. Lower and higher BMIs were associated with an increased risk of PTB, respectively, with the optimal pre-pregnancy BMI associated with the lowest risk of PTB being approximately 21.6 kg/m<sup>2</sup>. The lowest point may vary depending on whether there was a previous termination or fetal loss.
Authors
- Tingting Zhuang
- Jingli Sun
- Yu Zhang
Institutions
- General Hospital of Shenyang Military Region (CN)
- Jinzhou Medical University (CN)
Publication Details
- Journal
- Frontiers in Nutrition
- Published
- 2026-01-12
- DOI
- https://doi.org/10.3389/fnut.2025.1651462
- Primary Topic
- Gestational Diabetes Research and Management
- Type
- article
- Field-Weighted Citation Impact
- 0.00