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the claim

Obesity and excessive weight gain during pregnancy increase the risks of high blood pressure, gestational diabetes, large infants, and cesarean section.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that obesity and excessive weight gain during pregnancy increase the risks of high blood pressure, gestational diabetes, large infants, and cesarean section?

Yes. Obesity and excessive weight gain during pregnancy are consistently established as major risk factors that significantly elevate the likelihood of developing high blood pressure, gestational diabetes, delivering large infants, and undergoing a cesarean section.

Verdict: SUPPORTED · 8 sources for, 0 against · Last checked

The analysis

The retrieved population-based studies, cohort analyses, and large datasets uniformly support the claim that maternal obesity and excessive gestational weight gain increase the risks of gestational diabetes, high blood pressure (gestational hypertension/preeclampsia), large-for-gestational-age infants, and cesarean delivery. There are no contradicting papers in the provided set.

Evidence for · 8
Data-Driven Phenotypic Clusters of Gestational Diabetes Mellitus and Associations With Risk of Perinatal Complications and Postpartum Diabetes.
2026
Identifies distinct data-driven gestational diabetes phenotypic clusters linked to varying BMI profiles and perinatal complications.
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Y, Z., AL, N., LD, L., R, H., BJ, M., RF, C., MB, G., & A, F. (2026). Data-Driven Phenotypic Clusters of Gestational Diabetes Mellitus and Associations With Risk of Perinatal Complications and Postpartum Diabetes.. doi.org. https://doi.org/10.2337/dc25-2131

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More for · 7
Effect of pre-delivery body mass index and gestational weight gain oninfant weight
2019
Demonstrates that pre-delivery BMI and excessive gestational weight gain significantly increase the risk of delivering a high birth weight infant.
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Hussain, R. A. A. A. W. G. (2019). Effect of pre-delivery body mass index and gestational weight gain oninfant weight. doi.org. https://doi.org/10.12692/ijb/15.5.218-226

Associations of primiparous pre-pregnancy body mass index and gestational weight gain with cesarean delivery after induction: a prospective cohort study
2024
Finds that high pre-pregnancy BMI and excessive gestational weight gain are independent risk factors for cesarean delivery after induction.
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Lin, S., Xie, C., Teng, A., Chen, X., Li, Y., Zhang, Y., Zhang, H., & Sun, T. (2024). Associations of primiparous pre-pregnancy body mass index and gestational weight gain with cesarean delivery after induction: a prospective cohort study. doi.org. https://doi.org/10.3389/fmed.2024.1453620

Pre-Pregnancy Physical Fitness, Body Mass Index and Gestational Weight Gain as Risk Factors for Cesarean Delivery: A Study of Active Duty Women
2022
Shows that excessive gestational weight gain and high neonatal birth weight are independently associated with an increased rate of cesarean delivery.
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Gehrich, A. P., McCullum, K., Lustik, M. B., Sitler, C., Hauret, K., & DeGroot, D. (2022). Pre-Pregnancy Physical Fitness, Body Mass Index and Gestational Weight Gain as Risk Factors for Cesarean Delivery: A Study of Active Duty Women. doi.org. https://doi.org/10.1093/milmed/usac084

Prepregnancy Obesity Versus Excessive Gestational Weight Gain: A Comparative Evaluation of Adverse Outcomes.
2026
Confirms that prepregnancy obesity and excessive gestational weight gain elevate the risk of adverse maternal and neonatal outcomes including gestational diabetes, gestational hypertension, and cesarean delivery.
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S, S., D, K., MJ, B., AN, B., & M, G. (2026). Prepregnancy Obesity Versus Excessive Gestational Weight Gain: A Comparative Evaluation of Adverse Outcomes.. doi.org. https://doi.org/10.3390/jcm15176858

Modeling prepregnancy body mass index as a continuous exposure for obstetric and neonatal outcomes: a population-based analysis of 3.4 million births.
2026
Establishes through large-scale population data that increasing prepregnancy BMI is strongly and nonlinearly associated with higher risks of cesarean delivery, gestational diabetes, and gestational hypertension.
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M, S. & J, B. (2026). Modeling prepregnancy body mass index as a continuous exposure for obstetric and neonatal outcomes: a population-based analysis of 3.4 million births.. doi.org. https://doi.org/10.1016/j.ajogmf.2026.102091

Placental Pathophysiology and Developmental Programming of Adult Cardiometabolic Risk: A Narrative Review of Pregnancy Exposures.
2026
Links maternal obesity and excessive gestational weight gain to adverse offspring cardiometabolic profiles and pregnancy complications.
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E, P., I, K., Z, K., C, K., S, P., & E, H. (2026). Placental Pathophysiology and Developmental Programming of Adult Cardiometabolic Risk: A Narrative Review of Pregnancy Exposures.. doi.org. https://doi.org/10.3390/pathophysiology33030067

Exploring the associations of overweight and obesity with pregnancy outcomes in type 1 and type 2 diabetes: An Australian retrospective cohort study.
2026
Observes that increasing maternal BMI is associated with higher odds of excess gestational weight gain, cesarean delivery, and pre-eclampsia in diabetes cohorts.
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XM, Z., G, R., A, G., A, S., A, N., S, N., M, C., AJ, H., A, M., H, C., M, M., T, M., T, W., SM, T., & J, W. (2026). Exploring the associations of overweight and obesity with pregnancy outcomes in type 1 and type 2 diabetes: An Australian retrospective cohort study.. doi.org. https://doi.org/10.1111/jdi.70440

What does the evidence say?

The retrieved population-based studies, cohort analyses, and large datasets uniformly support the claim that maternal obesity and excessive gestational weight gain increase the risks of gestational diabetes, high blood pressure (gestational hypertension/preeclampsia), large-for-gestational-age infants, and cesarean delivery. There are no contradicting papers in the provided set.

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