KMAN Publication Inc. (KMANPUB) تست 3060-6713 4 Serial Number 14 2026 06 01 The Mediating Role of Islamic Lifestyle in the Relationship Between Social Media Use and Sleep Disorder with Academic Achievement The Mediating Role of Islamic Lifestyle in the Relationship Between Social Media Use and Sleep Disorder with Academic Achievement 1 13 10.61838/kman.prien.5500 EN Journal Article 2025 10 24 <p>The present study aimed to investigate the mediating role of Islamic lifestyle in the relationship between social media use and sleep disorder with academic achievement among high school students in Tehran. This study was conducted using a descriptive-correlational design based on structural equation modeling. The statistical population included high school students in Tehran during the 2025–2026 academic year, from whom 420 students were selected using multistage cluster sampling. Data were collected using the Social Media Use Integration Scale developed by Jenkins-Guarnieri et al. (2013), the Pittsburgh Sleep Quality Index developed by Buysse et al. (1989), and the Islamic Lifestyle Questionnaire developed by Kaviani (2010). Academic achievement was assessed through students’ grade point averages obtained from school records. Data analysis was performed using SPSS-27 and AMOS-24 software through descriptive statistics, Pearson correlation coefficients, and structural equation modeling. The findings demonstrated that social media use had a significant positive effect on sleep disorder (β = 0.52, p &lt; 0.001) and a significant negative effect on Islamic lifestyle (β = -0.48, p &lt; 0.001). Sleep disorder significantly and negatively predicted academic achievement (β = -0.39, p &lt; 0.001), whereas Islamic lifestyle had a significant positive effect on academic achievement (β = 0.46, p &lt; 0.001). Furthermore, the indirect effect of social media use on academic achievement through Islamic lifestyle was statistically significant (β = -0.18, p &lt; 0.001), confirming the mediating role of Islamic lifestyle in the proposed model. The structural model demonstrated satisfactory fit indices (CFI = 0.95, RMSEA = 0.057, χ²/df = 2.34). The findings indicate that excessive social media use and sleep disorder negatively influence students’ academic achievement, while Islamic lifestyle serves as a protective and mediating factor that enhances behavioral regulation and educational functioning.</p> https://www.journals.kmanpub.com/index.php/prien/article/download/5500/9916