Frequency of 5 food groups will be asked in dish-based semi-quantitative food frequency questionnaire and they would be converted to grams. GI and GL will be estimated by using international table of GI and GL.~Validated Iranian versions of Hospital Anxiety and Depression Scale and General Health Questionnaire (GHQ)-12 were used to assess anxiety, depression and psychological distress.~Possible score range for anxiety and depression is from 0 to 21. Scores of 8 or higher on either section were considered as the presence of anxiety or depression and scores of 7 or less were considered as normal status. In the present study, participants who got scores of 4 or more from GHQ were considered to have psychological distress.
A total of 300 adults would be included in the present cross-sectional study. glycemic index (GI) and glycemic load (GL) would be assessed by using a validated self-administered dish-based semi-quantitative food frequency questionnaire. Validated Iranian versions of Hospital Anxiety and Depression Scale and General Health Questionnaire-12 would be used to assess anxiety, depression and psychological distress.