Trends of overweight and obesity among preschool children from 2013 to 2018: A cross-sectional study in Rhine-Neckar County and the City of Heidelberg, Germany
Abstract BackgroundEarly childhood overweight and obesity is a growing public health concern worldwide. Few recent studies have addressed how time trends varied by sociodemographic characteristics at the regional level using large and high-quality data. This study aims to determine how time trends vary in the prevalence of early childhood overweight and obesity by age, gender, and migration background at the regional level.MethodsWe described the distribution change in the BMI with a Kernel-density curve, and evaluated the trends of overweight and obesity by age, gender, and migration background using logistic regression.ResultsMean BMI and the prevalence of overweight and obesity increased among preschool children aged 4-6 years in the Rhine-Neckar County and the City of Heidelberg. After adjusting for age, gender, and migration background, trends in the prevelance of overweight significantly increased only among male children in the age 5 year group with migration background (P < 0.05), and an upward trend of obesity was observed only among male children in the age 5 year group and female children in the age 6 year group with migration background (P < 0.05).ConclusionsBMI distribution as well as general prevalence of overweight and obesity are still increasing among preschool children. Children with migration backgrounds, particularly male children in the age 5 year groups and female children in the age 6 year group should be prioritized. More prevention policies should be targeted towards vulnerable groups.