Comparison of maternal and fetal outcomes in non-obese and obese women

Authors

  • Ahalya Nayak Department of Obstetrics and Gynecology, ESICMC PGIMSR, Bangalore, Karnataka India
  • S. Sreelatha Department of Obstetrics and Gynecology, ESICMC PGIMSR, Bangalore, Karnataka India
  • Ashok Kiran Department of Obstetrics and Gynecology, ESICMC PGIMSR, Bangalore, Karnataka India

DOI:

https://doi.org/10.18203/2320-1770.ijrcog20263981

Keywords:

Obesity, Pregnancy complications, Maternal health, Fetal outcome, Body mass index

Abstract

Background: Maternal obesity is a growing public health problem with negative maternal and perinatal outcomes. The aim of this study was to assess and compare the maternal and foetal outcomes of obese and non-obese pregnant women.

Methods: The study was case–control conducted at Department of Obstetrics and Gynecology, ESICMC & PGIMSR, Bengaluru from April 2024 to September 2025. 180 pregnant women were recruited and divided into obese (n=90) and non-obese (n=90) groups. Women who were pregnant with a single foetus and who were aged 19–42 years were included. The participants were followed during the pregnancy, delivery and postpartum period. Data was collected and analysed with SPSS version 26 and p<0.05 was regarded as statistically significant.

Results: Mean BMI was significantly higher in obese than non-obese women (33.56±4.01 vs. 22.32±1.53 kg/m²). Obese women were more likely to have comorbidities than normal weight women (73.3% vs. 41.1%, p<0.001), such as gestational diabetes mellitus (24.4% vs. 8.9%) and preeclampsia (24.4% vs. 6.7%). The rate of preterm birth (24.4% vs. 12.2%) and lower-segment caesarean section (54.4% vs. 36.7%) were higher in obese women. The intrauterine fetal death rate was only in obese women (4.4%). Obese women were more likely to be admitted to NICU (83.7% vs. 43.3%, p<0.001) mainly because of neonatal hypoxia and birth asphyxia.

Conclusion: Maternal obesity was significantly linked to greater rates of antenatal comorbidities, operative delivery, and adverse neonatal outcomes, and preterm delivery. Better antenatal monitoring and prompt obstetric intervention is recommended in obese pregnancies.

References

World Obesity Federation. Prevalence of obesity. Available at: https://www.worldobesity.org/about/about-obesity/prevalence-of-obesity. Accessed on 10 January 2026.

World Health Organization. Obesity and overweight. WHO fact sheet. 2025 Dec. Available from: World Health Organization website. Accessed on 10 January 2026.

Chakrabarty M, Let S. Spatial clustering of overweight/obesity among women in India: insights from the latest National Family Health Survey. PLoS One. 2024;19(7).

Press Information Bureau. Towards a fit and healthy India: combating obesity through NFHS-5 data. Government of India; 2025. Available from: Press Information Bureau website. Accessed 2025 May 17.

Haq N, Chamarthi VS, Ayabe A. Obesity in pregnancy. In: StatPearls Treasure Island (FL): StatPearls Publishing; 2025. Available from: NCBI Bookshelf. Accessed on 4 January 2026.

Persson M, Cnattingius S, Villamor E, Söderling J, Pasternak B, Stephansson O, et al Risk of major congenital malformations in relation to maternal overweight and obesity severity: cohort study of 1.2 million singletons. BMJ. 2017;357.

D'Souza R, Horyn I, Pavalagantharajah S, Zaffar N, Jacob CE. Maternal body mass index and pregnancy outcomes: a systematic review and meta-analysis. Am J Obstet Gynecol MFM. 2019;1(4):100041.

Kutchi I, Chellammal P, Akila A. Maternal obesity and pregnancy outcome: in perspective of new Asian Indian guidelines. J Obstet Gynaecol India. 2020;70(2):138-44.

Naik R, Karmali D, Nagarsenkar A, Mainath S, Pednekar G. Effect of pre-pregnancy maternal body mass index on obstetric outcomes in a tertiary care hospital in Goa, India. J Obstet Gynaecol India. 2022;72(2):141-6.

Gandhi S, Chauhan K, Rajan P, Wanjari M, Sangoi L, Sangoi R. Impact of maternal body mass index on pregnancy outcomes among Indian women. Bioinformation. 2024;20(10):1257.

Inian S, Nadar SR, Marconi S, Sukumar A, Cherian AG. Weight gain in pregnancy and impact of obesity on the obstetric outcome: a retrospective study in a secondary care hospital in South India. J Family Med Prim Care. 2024;13(10):4293.

Deshpande S, Kinnunen TI, Khadilkar A, Unni J, Khanijo V, Donga N, et al Pre-pregnancy weight, the rate of gestational weight gain, and the risk of early gestational diabetes mellitus among women registered in a tertiary care hospital in India. BMC Pregnancy Childbirth. 2023;23(1):586.

Dhabhai N, Chowdhury R, Virmani A, Chaudhary R, Taneja S, Mittal P, et al. Burden, risk factors and outcomes associated with adequately treated hypothyroidism in a population-based cohort of pregnant women from North India. PLoS One. 2023;18(9).

Sangeetha TM, Tamilarasi S. Maternal and fetal outcome in obesity complicating pregnancy. Int J Acad Med Pharm. 2024;6(5):223-8.

Bhattacharya S, Campbell DM, Liston WA, Bhattacharya S. Effect of body mass index on pregnancy outcomes in nulliparous women delivering singleton babies. BMC Public Health. 2007;7(1):168.

John J, Mahendran M. Maternal and fetal outcomes of obese pregnant women: a prospective cohort study. Int J Reprod Contracept Obstet Gynecol. 2017;6(2):725-30.

Zhang Y, Lu M, Yi Y, Xia L, Zhang R, Li C, et al. Influence of maternal body mass index on pregnancy complications and outcomes: a systematic review and meta-analysis. Front Endocrinol (Lausanne). 2024;15:1280692.

Vahratian A, Siega-Riz AM, Savitz DA, Zhang J. Maternal pre-pregnancy overweight and obesity and the risk of cesarean delivery in nulliparous women. Ann Epidemiol. 2005;15(7):467-74.

Stepan H, Scheithauer S, Dornhöfer N, Krämer T, Faber R. Obesity as an obstetric risk factor: does it matter in a perinatal center? Obesity (Silver Spring). 2006;14(5):770-3.

Salihu HM, Dunlop AL, Hedayatzadeh M, Alio AP, Kirby RS, Alexander GR. Extreme obesity and risk of stillbirth among black and white gravidas. Obstet Gynecol. 2007;110(3):552-7.

Yao R, Ananth CV, Park BY, Pereira L, Plante LA. Obesity and the risk of stillbirth: a population-based cohort study. Am J Obstet Gynecol. 2014;210(5):457.e1.

Tayade S, Singh R, Kore J, Gangane N. Maternal anthropometric measurements, pre-pregnancy body mass index, and fetal growth parameters: a rural experience. Obstet Gynecol Res. 2018;1(2):51-6.

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Published

2026-10-29

How to Cite

Nayak, A., Sreelatha, S., & Kiran, A. (2026). Comparison of maternal and fetal outcomes in non-obese and obese women. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 15(11), 4379–4385. https://doi.org/10.18203/2320-1770.ijrcog20263981

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Original Research Articles