Social Media Addiction Predicts Declining Well-Being in Young Adults, Three-Year Study Finds

A new longitudinal study tracking hundreds of German university students across three measurement waves has found that addictive patterns of social media use consistently foreshadow declines in physical health, psychological well-being, and self-esteem, while the way young people regulate their emotions can either buffer or amplify these effects. The research, published in the International Journal of Mental Health and Addiction, offers some of the clearest temporal evidence to date that problematic social media engagement is not merely a symptom of poor well-being but appears to actively erode it over time among emerging adults, a developmental window already recognized as a period of heightened vulnerability to addictive behaviors.

Emerging adulthood, typically defined as the span from the late teens through the twenties, is a life stage characterized by identity exploration, instability, and a heightened susceptibility to substance and behavioral addictions. It is also the period during which social media use tends to peak. Young adults in this age group are, in many respects, digital natives whose social lives, romantic relationships, academic identities, and professional aspirations are all mediated to a substantial degree by online platforms. The study’s authors, Hugo Sanchez-Sanchez and Konstanze Schoeps of the University of Valencia and Frances Hoferichter of Greifswald University, set out to disentangle the direction of the relationships between social media addiction, emotion regulation strategies, and multiple domains of quality of life in this population, moving beyond the cross-sectional snapshots that dominate the field.

To do so, the team recruited 620 German university students and followed them across three waves of data collection. At each wave, participants completed validated measures of social media addiction, their habitual use of two distinct emotion regulation strategies, and several dimensions of health-related quality of life, including psychological well-being, physical well-being, and self-esteem. The researchers then applied a cross-lagged panel model, a structural equation modeling technique specifically designed to examine temporal and reciprocal associations between variables measured repeatedly over time. By statistically controlling for each construct’s own prior level, cross-lagged models allow researchers to ask whether changes in one variable predict later changes in another, providing far stronger grounds for inferring directional effects than single-timepoint correlations can offer.

The results were striking in their consistency. Social media addiction at one wave reliably predicted lower levels of physical well-being, psychological well-being, and self-esteem at the following wave, even after accounting for participants’ baseline standing on each of these outcomes. In other words, students whose relationship with social media displayed addictive characteristics, such as salience, tolerance, mood modification, relapse, and withdrawal-like symptoms, tended to experience subsequent deterioration across all three well-being domains examined. Notably, the reverse pathways were weaker: declines in well-being did not consistently predict later increases in social media addiction, suggesting that the primary directional flow runs from problematic use toward diminished well-being rather than the other way around.

The physical health findings deserve particular attention, because much of the existing literature on social media effects has concentrated on mood, anxiety, and depression while paying less attention to somatic outcomes. The new results align with experimental work showing that deliberate reductions in social media usage can produce measurable improvements in physical health and daily functioning. Plausible mechanisms include the displacement of sleep, exercise, and face-to-face activity by compulsive scrolling, as well as the physiological stress associated with constant connectivity, notification-driven interruptions, and the pressure of perpetual social comparison. Whatever the precise pathway, the longitudinal pattern indicates that heavy, compulsive engagement with social platforms is followed by worse self-reported physical condition, not simply co-occurring with it.

The study’s second major contribution concerns emotion regulation, the repertoire of processes by which individuals influence which emotions they have, when they have them, and how they experience and express those emotions. Drawing on the influential process model of emotion regulation, the researchers distinguished between two strategies with very different consequences. Expressive suppression, which involves inhibiting the outward expression of ongoing emotional states, predicted decreases in every dimension of well-being measured, including psychological health, physical health, and self-esteem. Cognitive reappraisal, by contrast, which involves reinterpreting emotionally charged situations in ways that alter their meaning and emotional impact, predicted improvements over time in psychological well-being and self-esteem. These findings replicate a robust pattern in the emotion regulation literature, in which suppression is associated with physiological arousal, strained social relationships, and poorer mental health, while reappraisal is linked to resilience and adaptive functioning.

The theoretical framing of the study draws on the Interaction of Person-Affect-Cognition-Execution model of addictive behaviors, which conceptualizes problematic use of internet-related applications as the product of interactions between an individual’s predisposing characteristics, affective states, cognitive processes, and executive control capacities. Within this framework, social media platforms can serve as a maladaptive coping strategy, offering immediate but shallow relief from negative emotions while undermining the development of more sustainable regulatory skills. The new longitudinal data give this model empirical teeth: young adults who rely on suppression to manage their emotions fare worse over time, while those who can reframe situations maintain or improve their psychological resources, and addictive social media use chips away at well-being regardless.

For researchers, the methodological rigor of the design matters as much as the headline findings. Much of the public debate about social media harms has been fueled by correlational studies that cannot establish temporal precedence, leaving room for skeptics to argue that unhappy people simply use social media more. The three-wave cross-lagged panel approach substantially strengthens the causal interpretation, although the authors and methodologists alike caution that even longitudinal panel designs cannot fully rule out confounding by unmeasured variables, and that alternative analytic techniques such as random-intercept cross-lagged models continue to refine how such data should be interpreted. The study also benefited from established measurement instruments, including the Bergen Social Media Addiction Scale, whose longitudinal measurement invariance has been demonstrated in prior work, and a German-language version of the Emotion Regulation Questionnaire.

The practical implications reach well beyond the laboratory. The authors argue that their findings underscore the need for public health initiatives that promote healthier digital habits and simultaneously strengthen emotion regulation skills during emerging adulthood. Universities, which sit at the epicenter of this developmental stage, are natural settings for such interventions. Programs that teach cognitive reappraisal and other adaptive regulation strategies could serve a dual purpose, both directly supporting students’ psychological resources and potentially reducing the appeal of social media as an emotional escape hatch. At the same time, the consistent link between addictive use and physical well-being suggests that digital wellness efforts should address sleep, activity, and somatic health rather than focusing exclusively on mood.

As social media platforms continue to embed themselves in the daily routines of young people worldwide, evidence of this kind shifts the conversation from whether social media matters for well-being to which patterns of use, and which individual skills, determine its impact. The message emerging from this three-wave study of German students is twofold and unusually clear: compulsive, addiction-like engagement with social media is a longitudinal risk factor for declining physical health, psychological well-being, and self-esteem in emerging adults, but the trajectory is not fixed. Adaptive emotion regulation, particularly the capacity to reappraise difficult situations rather than suppress their expression, functions as a protective factor that can bend the curve toward resilience. For a generation navigating identity, intimacy, and ambition through a screen, cultivating that capacity may be one of the most consequential health investments available.

Subject of Research: Longitudinal effects of social media addiction and emotion regulation on quality of life in emerging adults

Article Title: Social Media Addiction, Emotion Regulation, and Quality of Life in Emerging Adults: A Cross-Lagged Panel Model

Article References: Sanchez-Sanchez, H., Schoeps, K., & Hoferichter, F. (2026). Social Media Addiction, Emotion Regulation, and Quality of Life in Emerging Adults: A Cross-Lagged Panel Model. International Journal of Mental Health and Addiction. https://doi.org/10.1007/s11469-026-01728-x

Image Credits: AI Generated

DOI: 10.1007/s11469-026-01728-x

Keywords: social media addiction, emerging adulthood, emotion regulation, cognitive reappraisal, expressive suppression, quality of life, self-esteem, psychological well-being, physical well-being, cross-lagged panel model, longitudinal study, university students