Social epidemiology of early adolescent nutrition.

backgroundThis study aimed to investigate associations between sociodemographic factors and dietary intake among a diverse population of early adolescents ages 10-13 years in the United States.

methodsWe examined data from the Adolescent Brain Cognitive Development (ABCD) Study in Year 2 (2018-2020, ages 10-13 years, N = 10,280). Multivariable linear regression models were conducted to estimate the adjusted associations between sociodemographic factors (age, sex, race and ethnicity, household income, parental education) and dietary intake of various food groups, measured by the Block Kids Food Screener.

resultsOlder age among early adolescents was associated with slightly less fruit, whole grain, and dairy and more monounsaturated fat consumption. Male sex was associated with a lower intake of fruit, fruit juice, vegetables, whole grains, and fiber and a higher intake of meat/poultry/fish, added sugars, fat, as well as higher glycemic index and glycemic load compared to female sex. Racial and ethnic minority status, lower household income, and lower parental education were generally associated with less fruit and vegetable consumption and more added sugars.

conclusionThese findings can guide public health interventions to reduce diet quality disparities by targeting key populations and addressing differences according to socioeconomic status, sex, and race. IMPACT: Sociodemographic disparities in diet quality have been studied, but none have explored sociodemographic associations with specific food groups and components (e.g., different types of fat) in early adolescence. In this demographically diverse sample of 10-13-year-old early adolescents in the US, we found sociodemographic disparities in dietary intake across various food groups. Most notably, male sex, racial and ethnic minority status, lower household income, and lower parental education were associated with less fruit and vegetable consumption and more added sugars.