Use of social networking sites and perception and intentions regarding body weight among adolescents.
Social networking sites (SNSs) not only offer users an opportunity to link with others but also allow individuals to compare themselves with other users. However, the link between the use of SNSs and the dissatisfaction with body weight is largely unknown. We investigated the associations between the use of SNSs and the perception of body weight and related behaviours among adolescent men and women.



The study sample consisted of 4,468 (48.5% women) 11-19-year-old Canadian students in grades 7 to 12 who participated in the 2013 Ontario Student Drug Use and Health Survey.



Overall, 54.6% of students reported using SNSs for 2 h or less per day, 28.0% reported using them for more than 2 h d-1and 17.4% reported infrequent or no use of SNSs (reference category). After adjustment for covariates, results showed that adolescent women who use SNSs for more than 2 h d-1had greater odds of dissatisfaction with body weight (odds ratio = 2.02; 95% confidence interval [CI]: 1.30-3.16). More specifically, they were more likely to perceive themselves as overweight (relative risk ratio [RRR] = 2.20; 95% CI: 1.34-3.60) compared with those who reported infrequent or no use of SNSs. Conversely, men who use SNSs for 2 h or less per day presented a lower risk for perceiving themselves as overweight (RRR = 0.68; 95% CI: 0.47-0.98) but not those who use SNSs for more than 2 h d-1. Women who use SNSs for more than 2 h d-1reported a greater likelihood of trying to lose weight (RRR = 2.52; 95% CI: 1.62-3.90).



Our results showed that heavy use of SNSs is associated with dissatisfaction with body weight in adolescent women.
Ottawa Public Health Ottawa Ontario Canada.
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H
Sampasa-Kanyinga
Healthy Active Living and Obesity Research Group Children's Hospital of Eastern Ontario Research Institute Ottawa Ontario Canada; Department of Paediatrics, Faculty of Medicine University of Ottawa Ottawa Ontario Canada.
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JP
Chaput
Centre for Addiction and Mental Health Toronto Ontario Canada; Dalla Lana School of Public Health University of Toronto Toronto Ontario Canada.
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HA
Hamilton
Adolescents; attitude with body weight; body image; dissatisfaction with body weight