Background/Aim. Obesity is a chronic and relapsing condition, and since
recently, it has been considered a global epidemic. Current guidelines for
tripartite treatment of obesity emphasize a program of lifestyle
modifications such as medical nutrition therapy, aerobic exercise, and
behavioral intervention. The aim of the study was to evaluate whether
specific psychological factors (general attitudes and beliefs and
frustration tolerance) could be predictors of successful weight loss, i.e.,
factors that can be further addressed as part of the integrated therapy
approach. Methods. A total of 84 consecutive overweight and obese female
participants who were apparently healthy and homogeneous in age, level of
education, and marital or employment status were prescribed the same
medical nutrition therapy protocol as a single six-month therapeutic
intervention. Prior to starting the therapy, the General Attitude and Belief
Scale (GABS) and the Frustration Discomfort Scale (FDS) were administered.
The participants were divided into two groups: successful (group A) and
unsuccessful (group B). Group A, or the successful group [with the mean body
mass index (BMI) ? standard deviation (SD) of 24.1 ? 5.81 kg/m2], consisted
of 40 participants who have reached the corresponding loss, i.e., they lost
? 10% of the starting body weight (BW). Group B, or the unsuccessful group
(with the mean BMI ? SD of 28.51 ? 2.74 kg/m2), consisted of 44 participants
who have not reached the corresponding loss, i.e., they lost < 10% of the
starting BW. Results. Participants in group B had significantly higher
scores (p < 0.05) on the GABS subscales for the Need for Approval, Need for
Comfort, and Other Downing. A statistically significant difference between
groups (p < 0.05) was shown for FDS subscales of Emotional Intolerance,
Entitlement, and Achievement Frustration. Conclusion. Results of our study
showed that participants who were unsuccessful in medical nutrition therapy
had a higher degree of dysfunctional attitudes and beliefs and higher scores
of frustration intolerance when compared to successful participants. The
recommendation, based on our results, would be to include
psychotherapeutic techniques in the integrative obesity treatment, aimed at
cognitive changes and increasing frustration tolerance.