Prevalence and Patterns of Social Media Use in Early Adolescents.

Objective: To describe patterns of social media use, including underage (under 13 years) use and sex differences, in a diverse, national sample of early adolescents in the U.S.

Methods: We analyzed the social media use data in the Adolescent Brain Cognitive Development Study (2019-2021, Year 3), which includes a national sample of early adolescents in the U.

Exploring body ideal internalization, sociocultural pressures, and probable muscle dysmorphia in Canadian and American boys and men.

This study aimed to determine whether the internalization of body ideals and sociocultural pressures to adhere to body ideals are associated with a greater likelihood of having probable muscle dysmorphia. Cross-sectional data from 1553 boys and men ages 15-35 from Canada and the United States were used. Multiple logistic regression analyses determined the association between the internalization of three body ideals, sociocultural pressures to adhere to body ideals from four sources, and having probable muscle dysmorphia.

Clinical characteristics of hospitalized male adolescents and young adults with avoidant/restrictive food intake disorder (ARFID).

Background: Avoidant/restrictive food intake disorder (ARFID) may result in significant medical sequelae. Compared to youth with eating disorders like anorexia nervosa (AN), youth with ARFID tend to be younger and are more likely to be male. We aim to describe sex differences in clinical characteristics of youth hospitalized for medical complications of ARFID and compare their characteristics with youth hospitalized for anorexia nervosa.

Race disparities in dental care use from adolescence to middle adulthood in the USA.

Background: This study examines the longitudinal patterns of dental care use from adolescence to middle adulthood (ages 11-43) and investigates racial and ethnic disparities in these patterns.

Methods: Data from Waves I through V of the National Longitudinal Study of Adolescent to Adult Health (1993-2018; ages 11-43). Semiparametric group-based trajectory model identified distinct dental care use trajectories.

Cyberbullying Victimization among Transgender and Gender-Questioning Early Adolescents.

Objective: To determine the association between transgender or gender-questioning identity and cyberbullying victimization in a diverse national sample of early adolescents in the US.

Methods: We analyzed cross-sectional data from the Adolescent Brain Cognitive Development (ABCD) Study (N=9,989, Year 3, 2019-2021, 11-14 years old, 48.8% female, 47.

Exploring the self-perceived causes of eating disorders among Chinese social media users with self-reported eating disorders.

Background: Even though robust evidence suggests the high prevalence of eating disorders (EDs) in China, EDs in China are characterized by low diagnosis rates, delayed treatment-seeking, and ineffective treatments. Given that listening to patients' perspectives and lived experiences is crucial to improving our understanding of EDs in the Chinese context, an investigation of the perceived causes of EDs in Chinese individuals with EDs represents a key step in improving the prevention and treatment of EDs in China.

Aims: To explore the perceived causes of EDs based on data from a sample of Chinese social media users with self-reported EDs, with a particular focus on the Zhihu platform.

Gender diversity and daily steps: Findings from the Adolescent Brain Cognitive Development Study.

Purpose: To examine the association between multiple dimensions of gender diversity and physical activity (daily steps) in a diverse national sample of early adolescents in the United States.

Methods: This study analyzed Year 2 data from the Adolescent Brain Cognitive Development (ABCD) Study (N = 6038, M=12.0 years).

Sexual orientation discrimination and eating disorder symptoms in early adolescence: a prospective cohort study.

Background: Sexual orientation discrimination increases the risks of negative health outcomes for sexual minorities. Previous studies have found increased rates of eating disorder symptoms in sexual minority individuals, which is attributable to minority stress and discrimination that they experience. Emerging research suggests relationships between sexual orientation discrimination and eating disorder symptoms.

Transgender Identity and Attention Deficit Hyperactivity Disorder Symptoms: Findings From the Adolescent Brain Cognitive Development Study.

Purpose: The purpose of this study was to examine associations between identifying as transgender and attention deficit hyperactivity disorder (ADHD) symptoms in US early adolescents.

Methods: We analyzed cross-sectional data from the Adolescent Brain Cognitive Development Study (Year 3, 2019-2021) to estimate associations between gender identity and ADHD symptoms using the Child Behavior Checklist Diagnostic and Statistical Manual of Mental Disorders-oriented attention problem scale scores, adjusting for age, sex, ethnicity, parent education, household income, and study site. Additional models adjusted for stress problems and depression symptoms.

Engagement in Intermittent Fasting is Prospectively Associated With Higher Body Mass Index, Higher Eating Disorder Psychopathology, and Lower Intuitive Eating in Chinese Adults.

Objective: This study examined cross-sectional and longitudinal associations of intermittent fasting (IF) engagement with body mass index (BMI), both thinness-oriented and muscularity-oriented eating disorder (ED) psychopathology, eating-related psychosocial impairment, and intuitive eating.

Method: Using a longitudinal design, 491 Chinese adults (M = 30.33 years, SD = 7.

Associations Between Gender Diversity and Eating Disorder Symptoms in Early Adolescence.

Objective: To assess associations between multiple dimensions of gender diversity with eating disorder symptoms in a national cohort of U.S. early adolescents.

Muscularity bias internalization moderates the associations of muscularity dissatisfaction with muscularity-oriented disordered eating and psychosocial well-being in men but not women.

Prior research demonstrates positive associations between muscularity dissatisfaction and an array of negative health outcomes, including muscularity-oriented disordered eating, eating-related psychosocial impairment, and psychological distress. However, muscularity dissatisfaction differs by gender and is not always linked to these outcomes, indicating the existence of moderators of these associations. We proposed and examined muscularity bias internalization (MBI) as a moderator of these associations.

Associations of adverse childhood experiences with blood pressure among early adolescents in the United States.

The associations of adverse childhood experiences (ACEs) with blood pressure in adulthood are inconclusive. Similarly, the association between ACEs and blood pressure earlier in the life course is understudied. This study aims to assess the associations of ACEs with blood pressure among early adolescents.

Reported higher general early-life bullying victimization is uniquely associated with more eating pathology and poor psychosocial well-being in Chinese sexual minority men.

General early-life bullying victimization has been used as an early-life marker of eating and body image disturbances and poor psychosocial well-being later in life. We expand existing research in this area to Chinese sexual minority (SM) men, a vulnerable and under-researched subgroup, by considering associations of general early-life bullying victimization with current eating and body image disturbances and poor psychosocial well-being. We assessed demographics, general early-life bullying victimization, past appearance teasing, current thinness- and muscularity-oriented eating and body image disturbances, and current psychosocial well-being in Chinese SM men (N = 433).

Discrimination and manic symptoms in early adolescence: A prospective cohort study.

Purpose: This study aims to investigate the prospective associations between four types of perceived discrimination (country of origin, race and ethnicity, sexual orientation, and weight) and the development of manic symptoms in a diverse, nationwide sample of adolescents aged 9-14 years in the U.S.

Methods: We analyzed prospective cohort data from the Adolescent Brain Cognitive Development Study (N = 7466; ages 9-14 years at Year 1 or 2 in 2017-2020; 48.

Prospective associations between sleep, sensation-seeking, and mature screen usage in early adolescents: findings from the Adolescent Brain Cognitive Development study.

Study Objectives: Early exposure to mature content is linked to high-risk behaviors. This study aims to prospectively investigate how sleep and sensation-seeking behaviors influence the consumption of mature video games and R-rated movies in early adolescents. A secondary analysis examines the bidirectional relationships between sleep patterns and mature screen usage.

Prevalence and sociodemographic associations with weight discrimination in early adolescents.

Objectives: To evaluate the prevalence of weight discrimination (the perception of being treated unfairly based on weight) and its sociodemographic associations among early adolescents aged 10 to 13 in the United States.

Methods: We analyzed cross-sectional data from the Adolescent Brain Cognitive Development (ABCD) Study in Year Two (2018-2020). Multivariable logistic regression analyses were conducted, with perceived weight discrimination as the dependent variable and age, sex, sexual orientation, race and ethnicity, body mass index (BMI) category, household income, and highest parental education level as adjusted independent variables.