Distinguishing delusional beliefs from overvalued ideas in Anorexia Nervosa: An exploratory pilot study

Plain English Summary Anorexia Nervosa (AN) is notable for the individual’s conviction that they need to lose weight—even when they are dangerously underweight- or to prevent weight gain. However, how these beliefs relate to the emotional experience of the body, in the presence of AN need to be explored further. This study begins to examine this relationship. Twenty-one adults (95% women; average age 27 years) receiving in-patient treatment for AN were asked a series of questions related to beliefs about their body. To allow a comparison between the level-of-insight and body shape dissatisfaction, participants were also asked to rate how satisfied or dissatisfied they were about their body shape. Almost 25% of the sample had beliefs of delusional intensity about their body shape. Further, it was also found that people with AN who had stronger beliefs of delusional intensity were more likely to be dissatisfied with their body shape. This pilot study appears to support previous research that suggests that some individuals with AN have stronger beliefs of delusional intensity. The findings from the current study should be extended with future research looking at the impact of beliefs on illness and treatment.