Dietary Knowledge, Attitudes, and Behaviors Related to Obesity and Highly Underweight Among Urban Chinese High School Students: A Cross-Sectional Study.

Objectives: This study aimed to identify dietary knowledge, attitudes, and behaviors related to obesity and highly underweight among urban Chinese high school students.

Methods: Using the data of 403 high school students from a cross-sectional survey in 2022, multinomial logistic regression analysis was conducted with the body mass index as the objective variable (reference: normal weight), dietary knowledge, attitudes, and behaviors as the explanatory variables, adjusted for sex.

Results: Both obesity and highly underweight were most strongly related to incorrect dietary knowledge of desirable types of diets.