ABSTRACT
Our objective was to investigate the relationship between dietary vitamin D intake and serum concentration of vitamin D (25(OH)D) on changes in body weight, waist circumference (WC), and body mass index (BMI), and to determine if this relationship changes between obese and non-obese individuals at baseline and those who have or do not have 25(OH)D deficiency. This was a prospective study with a sample of 572 individuals aged 25-65 years, who were participants in the cohort study EpiFloripa Adults. Changes in weight (in kg), BMI, and WC between 2012 and 2014 were evaluated as outcomes. The main exposure was the dietary intake of vitamin D (2012), and the 25(OH)D serum concentration was secondary. When the analyses were stratified by the presence of obesity in the baseline, among obese individuals it was observed that those in the extreme categories of vitamin D intake had an average gain of 3.0 kg in weight, 0.9 kg/m2 in BMI, and 1.7-2.7 cm in WC. When 25(OH)D serum concentration were incorporated into the analyses, it was observed that non-obese subjects not having 25(OH)D deficiency had a mean reduction of 2.3 cm in WC. In conclusion, the increases in body weight, BMI, and WC were higher over time in obese patients with deficient 25(OH)D serum concentration, regardless of dietary vitamin D intake.
Subject(s)
Nutritional Status , Obesity/physiopathology , Recommended Dietary Allowances , Vitamin D Deficiency/physiopathology , Vitamin D/analogs & derivatives , Vitamins/administration & dosage , Adult , Aged , Biomarkers/blood , Body Mass Index , Brazil/epidemiology , Female , Humans , Longitudinal Studies , Male , Middle Aged , Nutrition Assessment , Obesity/blood , Obesity/diagnosis , Obesity/epidemiology , Prospective Studies , Vitamin D/blood , Vitamin D Deficiency/blood , Vitamin D Deficiency/diagnosis , Vitamin D Deficiency/epidemiology , Vitamins/blood , Waist Circumference , Weight GainABSTRACT
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
Objetivo: Estimar la asociación entre trayectoria socioeconómica e índice de masa corporal (IMC), circunferencia de la cintura (CC) y obesidad general y abdominal en adultos. Métodos: Análisis transversal de un estudio de cohortes de base poblacional en 1222 adultos (22-63 años de edad) en Florianópolis, sur de Brasil. La trayectoria socioeconómica fue analizada mediante el nivel educativo de los padres y los propios participantes. La medición de altura, peso y CC fue realizada por personal especialmente entrenado. Se usaron modelos de regresión lineal y logística ajustando factores confusores y estratificando por sexo. Resultados: El promedio de IMC y CC fue de 2kg/m2 (intervalo de confianza del [IC95%]: −3,3 a −0,7) y 6cm (IC95%: −9,7 a −2,9), menor en las mujeres con mejor posición socioeconómica. Dicha asociación fue la contraria en el caso de los hombres, en los que el promedio de CC fue 4cm mayor (IC95%: 0,1 a 7,5). Las mujeres que siempre permanecieron en mejor posición socioeconómica fueron menos propensas a tener obesidad abdominal (odds ratio: 0,38; IC95%: 0,20 a 0,76), mientras que en los hombres no se observó dicha asociación. Conclusiones: La trayectoria socioeconómica se asocia al IMC, la CC y la obesidad, con diferencias entre sexos, indicando que la aplicación de políticas públicas que contemplen la trayectoria socioeconómica puede ser efectiva para el control de la obesidad
