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Association between cesarean delivery types and obesity in preadolescence. | LitMetric

AI Article Synopsis

Article Abstract

Background/objectives: The association between mode of delivery and childhood obesity remains inconclusive. Because few studies have separated C-section types (planned or unplanned C-section), our objective was to assess how these subtypes relate to preadolescent obesity.

Subjects/methods: The study consisted of 570 maternal-child pairs drawn from the WHEALS birth cohort based in Detroit, Michigan. Children were followed-up at 10 years of age where a variety of anthropometric measurements were collected. Obesity was defined based on BMI percentile (≥95th percentile), as well as through Gaussian finite mixture modeling on the anthropometric measurements. Risk ratios (RRs) and 95% confidence intervals (CIs) for obesity comparing planned and unplanned C-sections to vaginal deliveries were computed, which utilized inverse probability weights to account for loss to follow-up and multiple imputation for covariate missingness. Mediation models were fit to examine the mediation role of breastfeeding.

Results: After adjusting for marital status, maternal race, prenatal tobacco smoke exposure, maternal age, maternal BMI, any hypertensive disorders during pregnancy, gestational diabetes, prenatal antibiotic use, child sex, parity, and birthweight z-score, children born via planned C-section had 1.77 times higher risk of obesity (≥95th percentile), relative to those delivered vaginally ((95% CI) = (1.16, 2.72); p = 0.009). No association was found comparing unplanned C-section to vaginal delivery (RR (95% CI) = 0.75 (0.45, 1.23); p = 0.25). The results were similar but slightly stronger when obesity was defined by anthropometric class (RR (95% CI) = 2.78 (1.47, 5.26); p = 0.002). Breastfeeding did not mediate the association between mode of delivery and obesity.

Conclusions: These findings indicate that children delivered via planned C-section-but not unplanned C-section-have a higher risk of preadolescent obesity, suggesting that partial labor or membrane rupture (typically experienced during unplanned C-section delivery) may offer protection. Additional research is needed to understand the biological mechanisms behind this effect, including whether microbiological differences fully or partially account for the association.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7530127PMC
http://dx.doi.org/10.1038/s41366-020-00663-8DOI Listing

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