Publication date: Dec 02, 2025
Childhood obesity has remained persistently high in the United States. This study aimed to (1) assess changes in obesity prevalence and (2) examine the associations of ultra-processed food (UPF) intake and physical activity (PA) patterns with obesity, by obesity severity, before and during the COVID-19 pandemic among US 2- to 19-year-olds. A serial cross-sectional analysis using the National Health and Nutrition Examination Survey compared data from before (2017 to March 2020) and during (August 2021 to August 2023) the COVID-19 pandemic. Obesity was determined using body-mass-index-for-age percentiles: class I obesity (≥95th percentile to
| Concepts | Keywords |
|---|---|
| Childhood | Aimed |
| Covid | Assess |
| Nutrition | August |
| Obesity | Childhood |
| Covid | |
| Examine | |
| High | |
| Obesity | |
| Pandemic | |
| Prevalence | |
| Remained | |
| Severe | |
| States | |
| United | |
| Youth |
Semantics
| Type | Source | Name |
|---|---|---|
| disease | MESH | Obesity |
| disease | MESH | Severe Obesity |
| disease | MESH | COVID-19 |
| disease | MESH | Childhood obesity |
Original Article
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