This study explores the relationships between different variables of clinical relevance (i.e., psychopathology, eating disorders, and life quality) in subjects suffering from morbid obesity and candidates for bariatric surgery. Similarly, we study whether there are differences in these variables between men and women, age ranges, and degree of obesity. The sample comprised 129 subjects with morbid obesity (85 women and 44 men) who requested surgical treatment for obesity from the Health Services of Andalucia. The results indicate that, with few exceptions, the three sets of variables measured have a highly significant relationship. Significant differences were found between men and women in emotional variables and psychopathology indicators. Comparisons between different age groups only revealed significant differences regarding bulimic symptomatology. Regarding different degrees of obesity, no significant differences were found. Finally, we discuss the main theoretical implications of these results.