en بهداشت Health پژوهشي Original Article <div style="text-align: justify;"><span style="font-size:14px;"><span style="font-family:Tahoma;"><span style="line-height:2;"><span new="" roman="" times=""><strong>Background and Purpose</strong>: Smartphones offer easy access to the Internet and a good platform for all kinds of Internet activities. This study analyzed the relationship between social networking site (SNS) addiction and nomophobia among Iranian higher education students.&nbsp;<br> <strong>Materials and Methods</strong>: This is a cross-sectional study. The participants were selected through a stratified sampling approach: the questionnaire comprised demographic information, Nomophobia Questionnaire, and Bergen Social Media Addiction Scale. The impact of SNS addiction on nomophobia was assessed using structural equation modeling. Then, the relations between SNS addiction and the 4 dimensions of nomophobia were examined using regression coefficients.<br> <strong>Results</strong>: A total of 418 SNS users (279 females) took part in this work. SNS addiction showed a significant positive correlation with nomophobia and its 4 dimensions. A model with SNS addiction predicting nomophobia showed an adequate fit. The results showed that SNS addiction has a significant positive relationship with all dimensions of nomophobia. Among dimensions of nomophobia, SNS addiction was related to giving up convenience at the highest level, followed by losing connectedness and inability to access information and communicate.&nbsp;<br> <strong>Conclusion</strong>: Therefore, SNS addiction explains nomophobia successfully. This study has important implications for health and education providers. Taking into account the efforts to enhance students&rsquo; mental health through educational interventions regarding responsible uses of the SNSs and making healthy online habits in policymaking is recommended.</span></span></span></span></div> Social networks, Addictive behaviors, Anxiety, Health education, Survey 117 126 http://jhs.mazums.ac.ir/browse.php?a_code=A-10-927-1&slc_lang=en&sid=1 Yasaman Hashemi یاسمن هاشمی Hashemiyasaman@Gmail.com 10031947532846009760 10031947532846009760 No Department of Psychology, Faculty of Psychology & Educational Science, Shahid Beheshti University, Tehran, Iran. Khatereh Borhani خاطره برهانی Kh_borhani@sbu.ac.ir 10031947532846009761 10031947532846009761 No Institute for Cognitive and Brain Sciences, Shahid Beheshti University, Tehran, Iran. Mahmood Heidari محمود حیدری m-heydari@sbu.ac.ir 10031947532846009762 10031947532846009762 No Department of Psychology, Faculty of Psychology & Educational Science, Shahid Beheshti University, Tehran, Iran. Maryam Esfahani مریم اصفهانی Maryam.esfahani2011@gmail.com 10031947532846009763 10031947532846009763 No Department of Psychology, Faculty of Psychology & Educational Science, Semnan University, Semnan, Iran. Fariba Zarani فریبا زرانی f_zarani@sbu.ac.ir 10031947532846009764 10031947532846009764 Yes Department of Psychology, Faculty of Psychology & Educational Science, Shahid Beheshti University, Tehran, Iran.