Study of the Efficacy of GGON: a Cognitive Training App for Orthorexia Nervosa.

The aim of the present study is to evaluate the efficacy of GGON to decrease the maladaptive beliefs associated with orthorexia nervosa (ON) in non-clinical adult population. Specifically, a randomized controlled trial with crossover assignment design and two groups (experimental and control) will be carried out in adults aged 18-65 years to assess the changes pre and post use the app. It's expected that after the use of the GGON app for 15 days are, at the primary level: decrease in the degree of ascription to dysfunctional beliefs associated with ON; and at the secondary level: decrease in orthorexia nervosa symptomatology, in eating symptomatology and in obsessive beliefs; increase in self-esteem; and no changes in drepessive symptomatology. These results are also expected to be maintained in subsequent follow-ups, at 15 days and a month after to finish the app in experimental group, and 15 days after to finish the app in control group.