Longitudinal Trends in Body Mass Index Before and During the COVID-19 Pandemic Among Persons Aged 2-19 Years - United States, 2018-2020

Obesity is a serious health concern in the United States, affecting more than one in six children (1) and putting their long-term health and quality of life at risk.* During the COVID-19 pandemic, children and adolescents spent more time than usual away from structured school settings, and families...

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Bibliographic Details
Published in:MMWR. Morbidity and mortality weekly report 2021-09, Vol.70 (37), p.1278-1283
Main Authors: Lange, Samantha J, Kompaniyets, Lyudmyla, Freedman, David S, Kraus, Emily M, Porter, Renee, Blanck, Heidi M, Goodman, Alyson B
Format: Article
Language:English
Subjects:
Adolescent
Body mass
Body Mass Index
Body size
Body weight
Body weight gain
Child
Child, Preschool
Children
COVID-19
COVID-19 - epidemiology
Domestic relations
Female
Food security
Full Report
Humans
Longitudinal Studies
Male
Nutrition
Obesity
Pandemics
Pediatrics
Physical activity
Public health
Risk factors
Trends
Type 2 diabetes
United States - epidemiology
Young Adult
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Summary:Obesity is a serious health concern in the United States, affecting more than one in six children (1) and putting their long-term health and quality of life at risk.* During the COVID-19 pandemic, children and adolescents spent more time than usual away from structured school settings, and families who were already disproportionally affected by obesity risk factors might have had additional disruptions in income, food, and other social determinants of health. As a result, children and adolescents might have experienced circumstances that accelerated weight gain, including increased stress, irregular mealtimes, less access to nutritious foods, increased screen time, and fewer opportunities for physical activity (e.g., no recreational sports) (2,3). CDC used data from IQVIA's Ambulatory Electronic Medical Records database to compare longitudinal trends in body mass index (BMI, kg/m ) among a cohort of 432,302 persons aged 2-19 years before and during the COVID-19 pandemic (January 1, 2018-February 29, 2020 and March 1, 2020-November 30, 2020, respectively). Between the prepandemic and pandemic periods, the rate of BMI increase approximately doubled, from 0.052 (95% confidence interval [CI] = 0.051-0.052 to 0.100 (95% CI = 0.098-0.101) kg/m /month (ratio = 1.93 [95% CI = 1.90-1.96]). Persons aged 2-19 years with overweight or obesity during the prepandemic period experienced significantly higher rates of BMI increase during the pandemic period than did those with healthy weight. These findings underscore the importance of efforts to prevent excess weight gain during and following the COVID-19 pandemic, as well as during future public health emergencies, including increased access to efforts that promote healthy behaviors. These efforts could include screening by health care providers for BMI, food security, and social determinants of health, increased access to evidence-based pediatric weight management programs and food assistance resources, and state, community, and school resources to facilitate healthy eating, physical activity, and chronic disease prevention.
ISSN:0149-2195
1545-861X
DOI:10.15585/MMWR.MM7037A3