Abstract MP30: Longitudinal Tracking of Obesity From Childhood and Adolescence Into Adulthood: The International Childhood Cardiovascular Cohort (i3C) Consortium
Obesity in childhood and adolescence tracks into adulthood. However, limited longitudinal data exist on variation in tracking in relation to pediatric development periods, race, and gender. The study objective was to relate adult (age>30) weight status to that in childhood (3-11, mean 8.5 yrs; adult 36.6 yrs; N=4,511) and adolescence (12-17, mean 14 yrs; adult 39.9 yrs; N=7,215) from seven i3C cohorts. Overall tracking of BMI into adulthood was highly significant (p<0.0001) and similar from childhood and adolescence. Almost all obese children (74.3%) and adolescents (81.6%) became obese adults, and few obese children (6.5%) or adolescents (4.2%) became normal-weight adults. Overweight children and adolescents also were more likely to become obese adults (60.7% and 65.2%, respectively), and few became normal weight (11.7% and 6.6%). Normal weight children and adolescents tended to remain normal weight into adulthood (43% and 40.3%), but 22.7% of both normal-weight children and adolescents became obese. Patterns differed by race and gender (both p<0.001). Obese adolescent females had the highest persistence of obesity in adulthood (84.2%), followed by obese adolescent males (79.3%), obese male children (78.1%) and obese female children (70.6%). Normal weight male and female children and adolescents had a similar low prevalence of obesity as adults (22-23%), but females were more likely than males to remain normal weight from childhood (51.2% and 33.1%) and adolescence (48.7% and 30.6%). Tracking by race (see Table) showed that blacks had greater risk of adult obesity regardless of childhood or adolescent weight category. The results show that: 1) almost all obese and most overweight children and adolescents became obese adults; 2) one-fifth of white normal weight children and adolescents became obese adults; 3) even normal weight black children and adolescents are at significant risk of becoming obese adults. These data strongly suggest the need for early intervention to prevent adult obesity-related morbidity.