Is adolescent internet use a risk factor for the development of depression symptoms or vice-versa?

An Investigation of the Longitudinal Bidirectional Associations Between Interactive Versus Passive Social Media Behaviors and Youth Internalizing Difficulties. A Within-Person Approach

Ongoing concerns about the mental health of young people have intensified interest in the role of social media, with research suggesting that the nature of social media behaviors-whether interactive or passive-may differentially impact mental health. However, the bidirectional relationships between specific types of social media use and internalizing difficulties (anxiety and depression) remain underexplored, particularly at the within-person level over time. Data were extracted from the Dutch population-based Longitudinal Internet Studies for the Social Sciences (LISS) panel. Four yearly studies assessing time spent on interactive (communication) and passive use of social media in October (2019-2022) and four annual studies evaluating internalizing difficulties (anxiety and depression) in November (2019-2022) were used. Respondents who were 16- 25 years old in October 2019 (N = 321; M = 20.49; SD = 2.94; 61.7% female). Random Intercept Cross Lagged Path Models were used to analyze the data. There were no significant associations between passive social media use and internalizing difficulties at the within-person level over time. Within-person interactive use was associated with decreases in internalizing difficulties at one time point (2021 to 2022). The results provide marginal evidence that distinct social media behaviors are prospective factors associated with internalizing difficulties in young people.

Demystifying the New Dilemma of Brain Rot in the Digital Era: A Review

Background/Objectives: The widespread phenomenon of "brain rot", named the Oxford Word of the Year 2024, refers to the cognitive decline and mental exhaustion experienced by individuals, particularly adolescents and young adults, due to excessive exposure to low-quality online materials, especially on social media. The present study is exploratory and interpretative in nature, aiming to investigate the phenomenon of "brain rot", with a focus on its key pillars, psychological factors, digital behaviors, and the cognitive impact resulting from the overconsumption of low-quality digital content. Methods: This study employs a rapid review approach, examining research published between 2023 and 2024 across PubMed, Google Scholar, PsycINFO, Scopus, and Web of Science. It explores the causes and effects of brain rot, focusing on the overuse of social media, video games, and other digital platforms. Results: The findings reveal that brain rot leads to emotional desensitization, cognitive overload, and a negative self-concept. It is associated with negative behaviors, such as doomscrolling, zombie scrolling, and social media addiction, all linked to psychological distress, anxiety, and depression. These factors impair executive functioning skills, including memory, planning, and decision-making. The pervasive nature of digital media, driven by dopamine-driven feedback loops, exacerbates these effects. Conclusions: The study concludes by offering strategies to prevent brain rot, such as controlling screen time, curating digital content, and engaging in non-digital activities. Given the increasing prevalence of digital engagement, it is essential to explore a variety of strategies, including mindful technology use, to support cognitive health and emotional well-being. The results can guide various stakeholders-policymakers, practitioners, researchers, educators, and parents or caregivers-in addressing the pervasive impact of brain rot and promoting a balanced approach to technology use that fosters cognitive resilience among adolescents and young adults.

Associations between youth lifestyle habits, sociodemographic characteristics, and health status with positive mental health: A gender-based analysis in a sample of Canadian postsecondary students

Objective

This study aims to estimate associations between lifestyle habits, sociodemographic characteristics, health status, and positive mental health (i.e., flourishing, languishing, moderate) and anxiety and depression symptoms in postsecondary students.

Methods

This cross-sectional study used a convenience sample of 2165 Canadian first-semester postsecondary students (59 % female, 41 % men). Participants reported positive mental health using the Mental Health Continuum-Short Form and completed the Hospital Anxiety and Depression Scale to screen for probable cases of anxiety and depression in the Fall of 2023. Participants reported lifestyle habits including recreational screen time (hours/day), physical activity (minutes/week), in-person social interaction (frequency/week), and homework (hours/week). Participants reported age, gender, race/ethnicity, socioeconomic status, and health status (presence of a disability or health problem).

Results

Women's weekend screen time was associated with an 11 % reduction in the odds of experiencing flourishing mental health (odds ratio [OR]: 0.89, 95 % CI, 0.83-0.95), and never engaging in in-person socializing increased the odds of women experiencing languishing mental health (OR: 3.80, 95 % CI, 1.45-9.96). More frequent engagement in physical activity and homework were each associated with an increased odds of men experiencing flourishing mental health (OR: 1.00, 95 % CI, 1.00-1.00; OR: 1.03, 95 % CI, 1.00-1.05).

Conclusions

These findings highlight modifiable lifestyle habits including screen time, physical activity, in-person socializing, and homework which can be leveraged for mental health promotion among postsecondary students.

Urban-Rural Differences in the Association Between Internet Use Trajectories and Depressive Symptoms in Chinese Adolescents: Longitudinal Observational Study

BACKGROUND

Internet use exhibits diverse trajectories during adolescence, which may contribute to depressive symptoms. Currently, it remains unclear whether the association between internet use trajectories and depressive symptoms varies between urban and rural areas.

OBJECTIVE

This study aimed to investigate the association between internet use trajectories and adolescent depressive symptoms and to explore variation in this association between urban and rural areas.

METHODS

This longitudinal study used 3-wave data from the 2014-2018 China Family Panel Study. Weekly hours of internet use and depressive symptoms were measured using self-reported questionnaires. Latent class growth modeling was performed to identify the trajectories of internet use. Multivariable logistic regressions were used to examine the association between internet use trajectories and depressive symptoms, stratified by rural and urban residence.

RESULTS

Participants were 2237 adolescents aged 10 to 15 years at baseline (mean age 12.46, SD 1.73 years). Two latent trajectory classes of internet use were identified: the low-growth group (n=2008, 89.8%) and the high-growth group (n=229, 10.2%). The high-growth group was associated with higher odds of depressive symptoms (OR 1.486, 95% CI 1.065-2.076) compared to the low-growth group. In the stratified analysis, the association between internet use trajectories and depressive symptoms was significant solely among rural adolescents (OR 1.856, 95% CI 1.164-2.959).

CONCLUSIONS

This study elucidates urban-rural differences in the associations between trajectories of internet use and adolescent depressive symptoms. Our findings underscore the importance of prioritizing interventions for rural adolescents' internet use behaviors to mitigate negative effects on their mental health.

The impact of internet device diversity on depressive symptoms among middle-aged and older adults in China: A cross-lagged model of social participation as the mediating role

BACKGROUND

Depressive symptoms is more prevalent in middle-aged and older populations, and the development of Internet technology has brought new challenges and opportunities for the mental health of this group. This study aims to explore the bidirectional relationship between Internet device diversity and levels of depressive symptoms through longitudinal data analysis, as well as investigate the mediating role of social participation.

METHODS

Data for the analysis was retrieved from the China Health and Retirement Longitudinal Study (CHARLS) in 2015, 2018, and 2020, which included 9259 middle-aged and older adults. The sum of the number of devices mentioned by each participant was calculated to assess the diversity of internet device use, a weighted total score of how frequently and to what extent individuals had participated in various social activities in the past month was calculated to measure the social engagement, and the Center for Epidemiological Studies Depression Scale was used to calculate depressive symptoms. A cross-lagged mediation model and bivariate correlation analysis were employed to examine the longitudinal relationships among depressive symptoms, internet device diversity, and social participation. Age, gender, highest education level, marital status, drinking status, smoking history, self-rated health, sleep duration, and chronic health conditions were adjusted as covariates.

RESULTS

The results from the three waves of longitudinal data revealed mutual predictive relationships among internet device diversity, social participation, and depressive symptoms. The mediating effect was significant (β = -0.612, 95 % CI -0.796 to -0.429), with significant gender differences observed. Furthermore, our findings indicated that social participation functioned as a protective factor against depressive symptoms, and the association between social participation and depressive symptoms was not a straightforward linear relationship. This suggests that participation in social activities (either high or low) is associated with a lower risk of depressive symptoms compared to no social participation, with no gender differences.

CONCLUSIONS

This study suggests that there is a relationship between internet device diversity and lower levels of depressive symptoms among middle-aged and older adults in China. Social participation mediates the relationship between internet device diversity and depressive symptoms, and different levels of social engagement have different effects on depressive symptoms. It is recommended to increase support for social participation among middle-aged and older adults, strengthen structural social capital, and better leverage the use of the internet to reduce depressive symptoms levels and promote the physical and mental well-being of this population.

Prevalence and correlates of post-traumatic stress disorder and depression among welfare- and justice-involved adolescents in Nigeria

Background: Childhood maltreatment (CM) is higher among welfare- and justice-involved youth than in those not involved in these systems, which increases the risk of depression and post-traumatic stress disorder (PTSD). However, the mechanisms underlying the link between CM and these two psychiatric conditions are less well understood among at-risk populations in low- and middle-income countries.Objective: This study attempts to fill this gap by examining the prevalence of and risk factors for depression and PTSD among at-risk groups in Nigeria.Method: A cross-sectional research design using multistage sampling was adopted. The sample comprised 205 adolescents: justice-involved [102 (49.8%)] and welfare-involved [103 (50.2%)]. In total, 151 (73.7%) were males, while 54 (26.3%) were females. Multivariate logistic regression analysis and multivariate analysis of variance were applied.Results: The results showed that 66.1% of welfare-involved adolescents and 69.6% of justice-involved adolescents reported PTSD, while 68.9% of welfare-involved adolescents and 75.5% of justice-detained adolescents reported depression. Neglect (OR = 0.253; 95% CI 0.146-0.571; p < .001) and witnessing violence (OR = 0.230; 95% CI 0.114-0.597; p < .004) predicted depression. Emotional abuse (OR = 0.186; 95% CI 0.090-0.80; p < .015), witnessing violence (OR = 0.147; 95% CI 0.014-0.876; p < .043), neglect (OR = 0.187; 95% CI 0.14-0.90; p < .008), and physical abuse (OR = 0.27; 95% CI 0.254-0.937; p < .001) predicted PTSD. Also, PTSD significantly differed based on type of placement (F = 6.08, p < .014, η2 = .029), but depression did not differ based on type of placement (F = 2.46, p > .118, η2 = .012).Conclusions: CM profiles are risk factors in PTSD and depression among at-risk groups. CM screening should be included in mental health services of out-of-home placements to prevent the cycle of mental health problems and reoffending. Trauma-focused and cognitive-behavioural therapies have the potential to alleviate the suffering of traumatized adolescents.

Global burden of depression or depressive symptoms in children and adolescents: A systematic review and meta-analysis

BACKGROUND

Depression is the leading cause of health-related disability. A proportion of depression cases begin in childhood and increase dramatically during adolescence. This systematic review and meta-analysis aimed to estimate the global prevalence of depression or depressive symptoms in children and adolescents and explore the temporal and regional distribution of depression or depressive symptoms.

METHODS

This systematic review and meta-analysis identified peer-reviewed literature published through April 8, 2023, using the MEDLINE, Embase and APA PsycINFO databases, supplemented by reverse reference searches. Observational studies published in English and based on validated instruments with prevalence data on depression or depressive symptoms in children and adolescents aged ≤18 years were eligible. Random-effects meta-analysis and meta-regression analysis were performed using R software.

RESULTS

This systematic review and meta-analysis included a total of 96 studies (29 countries, 528,293 participants) published between 1989 and 2022. The pooled prevalence of mild-to-severe, moderate-to-severe, and major depression were 21.3 % (95%CI, 16.7 %-26.7 %), 18.9 % (95%CI, 14.6 %-24.2 %), and 3.7 % (95%CI, 2.7 %-5.1 %) respectively. Meta-regression analysis showed that from 1989 to 2022, the prevalence of mild-to-severe and moderate-to-severe depression increased over time (P = 0.002, P = 0.034, respectively), but the prevalence of major depression did not change significantly (P = 0.636).

LIMITATIONS

Only English articles were included. There was significant heterogeneity across the included studies. The studies included were mostly based on self-report scales to assess depressive symptoms.

CONCLUSION

In this systematic review, about one in five children and adolescents globally suffered from depression or had depressive symptoms, and this proportion was increasing over time.

Prospective association of screen time with binge-eating disorder among adolescents in the United States: The mediating role of depression

OBJECTIVE

Screen time has been reported to be associated with binge-eating disorder (BED) among adolescents in the US; however, potential mediators remain unclear. This study aimed to evaluate depression symptoms as a mediator of the prospective association between screen time and BED.

METHOD

We utilized data from 9465 children (aged 9-11 years at baseline) from the Adolescent Brain Cognitive Development (ABCD) study (2016-2021). A generalized structural equation model was used to examine the prospective association between average daily screen time at baseline and BED at year 2, adjusting for baseline BED diagnosis, and other potential covariates (e.g., age, sex, and income). Mediation was examined using bias-corrected (BC) 95% confidence intervals for the indirect effect of baseline screen time on year 2 BED through depression symptoms (change from baseline to year 1).

RESULTS

One hundred and one participants (42.7% male, 49.4% racial/ethnic minority) met the criteria for BED in year 2. Participants were 9.9 years of age on average at baseline, 51.3% identified as male, and 43.1% identified as a racial/ethnic minority. Adjusting for covariates, screen time was prospectively associated with BED (OR = 1.09, 95% CI [1.03, 1.14], p = .005). Depression symptoms (B = .19, BC 95% CI [0.10, 0.28]) partially mediated (9.2%) the prospective association between screen time and BED.

DISCUSSION

Among US adolescents, higher baseline screen time was prospectively associated with BED diagnosis at year 2, and this relationship was partially mediated by increased depression symptoms. Preventive approaches targeting high screen use may have utility for reducing BED risk among adolescents.

PUBLIC SIGNIFICANCE

Among U.S. adolescents, higher screen time was prospectively associated with the incidence of BED. This association was partially mediated by the change in depressive symptoms. Preventive approaches targeting high screen use may have utility for reducing BED risk among adolescents.

Motivation for Physical Activity as a Key Determinant of Sedentary Behavior Among Postsecondary Students

It is known that the transition to adulthood represents a critical period of life when acquiring healthy behaviors can influence lifestyle and health throughout adulthood. Given the importance of the consequences of a sedentary lifestyle, identifying influence factors is key to improving healthy behaviors. The objective of this study is to explore the role of postsecondary students' motivation toward physical activity in the association with their screen time and out-of-school physical activity practice. A total of 1522 postsecondary students (90% were aged 17-20 years) recruited from 17 postsecondary institutions completed the self-reported questionnaire during course time. Multivariate linear regression was used to assess the association between motivation to move including additional predictors of behavior such as intention and tendency to self-activate and self-reported screen time and physical activity controlling for age and sex. Motivation including all 3 motivational variables (interest, utility, competence) was negatively associated with screen time, b = -0.498 (95% CI between -0.635 and -0.361) and positively associated with moderate-to-vigorous physical activity, b = 133.986, (95% CI between 102.129 and 165.843). Of the 3 motivational variables, interest had the strongest negative association with screen time, b = -0.434 (95% CI between -0.551 and -0.317), and the strongest positive association with physical activity, b = 113.671, (95% CI between 86.396 and 140.946). These findings indicate that the motivation of postsecondary students toward physical activity significantly influences their behaviors, including screen time and physical activity engagement.

Adolescent internet use predicts higher levels of generalized and social anxiety symptoms for girls but not boys

Past research suggests that internet use can increase the risks of internalizing symptoms in adolescents. However, bidirectional relationships between adolescent internet use and anxiety symptoms have received very little attention. Furthermore, few studies have examined these links according to sex. The present study attempts to fill this gap by investigating longitudinal associations between Canadian boys' and girls' internet use and symptoms of generalized anxiety and social anxiety using data from the Quebec longitudinal Study of Child Development. A sample of 1324 adolescents (698 girls, 626 boys) self-reported the number of hours per week they spent on the internet and their symptoms of generalized and social anxiety at ages 15 and 17. We estimated two cross-lagged panel models with social or generalized anxiety symptoms and internet use at age 15 predicting those same variables at age 17. Sex was used as a grouping variable and socioeconomic status was included as a control variable. Internet use at 15 predicted generalized and social anxiety symptoms at age 17 in girls, but not boys. Social and generalized anxiety symptoms at age 15 did not predict internet use at age 17 for both boys and girls. These results suggest that internet use can be a significant risk factor for the development of anxiety symptoms in adolescent girls. Girls may be more vulnerable to the negative effects of internet use due to increased sensitivity to social comparisons. Thus, helping girls develop healthier internet use habits should be a target for promoting their mental health.