This study is a randomized controlled trial. There will be two randomly assigned groups of obese or overweight adolescents (WHO definition). Both groups will be enrolled in a 12 week weight reduction program which includes personal nutritional evaluation and food plan and exercise routine. Follow-up appointments will be held every 3 weeks. One group will be encouraged to update their Facebook status at least once a day, regarding their healthy lifestyle changes (exercise routine, healthy food choice, checking-in at the wellness center, kilograms lost, etc). The control group will be asked not to share information about their program on Facebook for 12 weeks. Facebook follow-up will be held by the investigators on the study's Facebook account. Teenagers will be thoroughly explained on how to set the account to a limited profile if they want to. At the end of the program both groups will be compared regarding weight loss and mean BMI.
The purpose of this study is to determine if Facebook can be used as a motivating factor for obese or overweight adolescents in a weight-reduction program.