A validated SCOFF questionnaire will be self-administered to patients attending their first preoperative bariatric surgery appointment. The SCOFF questionnaire is a simple 5-question test developed to assess the possible presence of an eating disorder. The S in SCOFF stands for "sick" (to vomit). The O stands for "one stone" of weight (i.e., 6.35 kg). The letters C, F and F stand for "control", "fat" and "food" respectively. Although the SCOFF is not used for diagnostic purposes, a score of 2 or more positive answers raises the index of suspicion of eating disorders, highlighting the need for a more detailed psychological history .The SCOFF has been previously validated in Arab populations.

Kuwait University Anxiety Scale (KUAS)

The Kuwait University Anxiety Scale will be used to measure level of anxiety. The 20-item scale will capture cognitive/affective anxiety (9 items), subjective anxiety or nervousness (7 items), and somatic anxiety (4 items) [4]. Responses use a 4-point Likert scale ranging from 1=rare, 2=sometimes, 3= often, 4= always to measure the level of anxiety . The cut offs to indicate anxiety include 0 - 21 normal, 22 - 42 mild anxiety, 42 - 63 moderate anxiety, 64 - 84 severe anxiety.