Psychological and Physiological Factors Predicting Tolerability and Weight Loss with Intragastric Balloon in Combination with Low-Calorie Diet and Group Treatment in Adults with Obesity

This study focuses on predictive factors for the efficacy of these treatments and is structured in four main areas:

1. Investigating primary healthcare doctors' views and perceptions of obesity and comparing them to the views of people with obesity, through a Q-methodology study.
2. Identifying baseline psychological and biological factors that can predict tolerability of an intragastric balloon (IGB).
3. Identifying psychological characteristics that can predict the effects of low-calorie diet (LED) + cognitive behavioral therapy (CBT) and examining the dynamic relationships between psychological variables and weight outcomes.
4. Identifying psychological and gastrointestinal (GI) symptoms that can predict the effects of LED + CBT + IGB and examining the dynamic relationships between psychological variables, GI symptoms, and weight outcomes.