Socio-economic life course and obesity among adults in Florianopolis, southern Brazil

Abstract

Objective: To estimate the association between socio-economic life course and body mass index (BMI), waist circumference (WC) and general and abdominal obesity in adults.

Methods: A cross-sectional analysis of a population-based cohort study of 1,222 adults (aged 22-63) from Florianopolis, southern Brazil. The socio-economic life course was analysed using the educational level of participants and their parents. Height, weight and WC were measured by specially trained staff. Linear and logistic regressions were used with adjustment for confounding factors, and data were stratified according to sex.

Results: Mean BMI and WC were about 2kg/m² (95% CI: -3.3 to -0.7) and 6cm (95% CI: -9.7 to -2.9) lower in women with a high socio-economic position, while the association was reversed in men with a high socio-economic position, with WC being about 4cm higher (95% CI: 0.1 to 7.5). In addition, women who had always been in a high socio-economic position were less likely to have abdominal obesity (OR: 0.38; 95% CI: 0.20 to 0.76) while no such association was found in men.

Conclusion: Socio-economic life course influences BMI, WC and obesity, with differences between males and females, thereby indicating that public policies that contemplate a socio-economic life course approach can be effective for controlling obesity.

Keywords: Adultos; Adults; Cross-sectional study; Estudio transversal; Factores socioeconómicos; Obesidad; Obesity; Socio-economic factors; Socio-economic life course; Trayectoria socioeconómica.