Journal
AMERICAN JOURNAL OF CLINICAL NUTRITION
Volume 93, Issue 6, Pages 1344-1347Publisher
AMER SOC CLINICAL NUTRITION
DOI: 10.3945/ajcn.110.010033
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Funding
- Fundacao de Apoio a Pesquisa do Estado de Sao Paulo [93/0525-0, 97/09517-1, 00/09508-7]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
- FAEPA-HCFMRPUSP, Brazil
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [00/09508-7] Funding Source: FAPESP
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Background: Obesity is epidemic worldwide, and increases in cesarean delivery rates have occurred in parallel. Objective: This study aimed to determine whether cesarean delivery is a risk factor for obesity in adulthood in a birth cohort of Brazilian subjects. Design: We initiated a birth cohort study in Ribeirao Preto, southeastern Brazil, in 1978. A randomly selected sample of 2057 subjects from the original cohort was reassessed in 2002-2004. Type of delivery, birth weight, maternal smoking, and schooling were obtained after birth. The following data from subjects were collected at 23-25 y of age: body mass index (BMI; in kg/m(2)), physical activity, smoking, and income. Obesity was defined as a BMI >= 30. A Poisson multivariable model was performed to determine the association between cesarean delivery and BMI. Results: The obesity rate in adults born by cesarean delivery was 15.2% and in those born by vaginal delivery was 10.4% (P = 0.002). Adults born by cesarean delivery had an increased risk (prevalence ratio: 1.58; 95% CI: 1.23, 2.02) of obesity at adulthood after adjustments. Conclusion: We hypothesize that increasing rates of cesarean delivery may play a role in the obesity epidemic worldwide. Am J Clin Nutr 2011;93:1344-7.
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