Study: Incidence of childhood obesity on the rise, occurs at
In this study, the researchers examined two cohorts of the Early Childhood Longitudinal Study (ECLS), which enrolled children in kindergarten and followed them through fifth grade. The first cohort was followed from 1998 to 2004 and the second from 2010 to 2016, with the ECLS results showing an increase in the incidence of obesity in the 2010 cohort compared with the 1998 cohort. Further, the researchers found that 72.9% of children entering kindergarten in 1998 had normal BMI, whereas 15.1% had overweight and 12% had obesity. Twelve years later, the percentage of children starting school with a normal BMI had decreased to 69%. Moreover, among children who entered kindergarten without obesity, 29% more non-Hispanic Black children developed obesity by fifth grade in the later cohort compared with the earlier one. Obesity incidence remained unchanged or decreased in other race and ethnicity groups, results showed.