Dalle Grave, R., Calugi, S., Bosco, G., Valerio, L., Valenti, C., El Ghoch, M., & Zini, D. (2018). Personalized group cognitive behavioural therapy for obesity: a longitudinal study in a real-world clinical setting. Eating and Weight Disorders. doi:10.1007/s40519-018-0593-z
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Severe obesity is difficult to treat, and non-surgical treatment is not supported by robust evidence. The aim of the present study was to establish the immediate and longer-term outcomes following “personalized” form of group cognitive behavioural therapy for obesity (CBT-OB)—a new treatment designed to address specific cognitive processes that have been associated with attrition, weight loss, and weight maintenance in previous studies.
Sixty-seven adult patients with obesity (body mass index (BMI) ≥ 30 kg/m2) were recruited from consecutive referrals to an Italian National Health Service obesity clinic. Each patient was offered 22 group sessions of CBT-OB (14 in the 6-month weight-loss phase and 8 in the subsequent 12-month weight-maintenance phase).
76.2% patients completed the treatment, with an average weight loss of 11.5% after 6 months (10% in the intention-to-treat analysis) and 9.9% (7.5% in the intention-to-treat analysis) after 18 months. Weight loss was associated with a significant reduction in cardiovascular risk factors, anxiety, depression, and eating disorder psychopathology, and an improvement in obesity-related quality of life.
These findings provide strong preliminary support for the use of CBT-OB for obesity in standard clinical settings, and justify its further evaluation in randomized controlled trials.