Self-monitoring has no adverse effect on disordered eating in adults seeking treatment for obesity

ObjectivesAlthough monitoring is considered a key component of effective behaviour change, the development of apps has allowed consumers to constantly evaluate their own diet, with little examination of what this might mean for eating behaviour. The aim of this study was to investigate whether self-monitoring of diet using the app MyFitnessPal or daily self-weighing increases the reported occurrence of eating disorders in adults with overweight/obesity following a weight loss programme. MethodsTwo hundred fifty adults with body mass index27kg/m(2) received diet and exercise advice and were randomized to one of four monitoring strategies (daily self-weighing, MyFitnessPal, brief monthly consults or self-monitoring hunger) or control for 12months. The Eating Disorder Examination Questionnaire 6.0 was used to assess eating disorder symptoms and behaviours for the previous 28d at 0 and 12months. ResultsThere were no significant differences in the global Eating Disorder Examination Questionnaire score or the subscales between those in the four monitoring groups and the control at 12months (all p0.164), nor were there differences in binge eating, self-induced vomiting, laxative misuse or excessive exercise at 12months (p0.202). The overall prevalence of one or more episodes of binge eating was 53.6% at baseline and 50.6% at 12months, with no change over time (p=0.662). ConclusionsThere was no evidence that self-monitoring, including using diet apps like MyFitnessPal or daily self-weighing, increases the reported occurrence of eating disorder behaviours in adults with overweight/obesity who are trying to lose weight.