Social Media Use and Its Concurrent and Subsequent Relation to a Biological Marker of Inflammation: Short-Term Longitudinal Study

• Published in: Journal of medical Internet research Vol. 25; no. 1; p. e46309
• Main Authors: Lee, David, Jiang, Tao, Crocker, Jennifer, Way, Baldwin
• Format: Journal Article
• Language: English
• Published: Canada Journal of Medical Internet Research 08.12.2023; Gunther Eysenbach MD MPH, Associate Professor; JMIR Publications
• Subjects: Analysis; Biological markers; Biomarkers; Blood tests; C-reactive protein; Chronic diseases; Chronic illnesses; Data collection; Diabetes; Health aspects; Health status; Inflammation; Influence; Longitudinal studies; Mental health; Pacific Islander people; Questionnaires; Screen time; Short term; Social media; Social networks; Type 2 diabetes; well-being; physical health; inflammation; chronic disease; mental health; screen time; social media use; biomarker; social media
• ISSN: 1438-8871; 1439-4456; 1438-8871
• DOI: 10.2196/46309

Although many studies have examined the impact of social media use (SMU) on mental health, very few studies have examined the association of SMU with health-relevant biomarkers. Addressing this gap, we conducted a short-term longitudinal study examining the link between SMU and C-reactive protein (CRP), a biological marker of systemic inflammation predictive of major depression, chronic diseases, and mortality. We measured college students' weekly amount of SMU for 5 consecutive weeks objectively via the Screen Time app and collected blood samples at baseline and 5 weeks later. In separate cross-sectional analyses conducted at phase 1 (baseline) and at phase 2 (5 weeks after baseline), objective SMU had a positive, concurrent association with CRP at both time points. Critically, in a longitudinal analysis, more SMU between phase 1 and phase 2 predicted increased CRP between these time points, suggesting that increased SMU led to heightened inflammation during that period. Although more research is needed to understand why SMU led to higher inflammation, the association between objective SMU and a marker of a biological process critical to physical health presents an intriguing opportunity for future research on social media effects.