Automation of Food Questionnaires in Medical Studies: A state-of-the-art review and future prospects

► Automation of FFQs and 24HDRs saves costs and speeds nutritional studies. ► Two kinds of automation succeeded in last years: Web-based and computerized. ► Web-based FFQs and 24HDRs provide more advantages than those computer-based. ► New trends involve automating FFQs and 24HDRs using PDAs and mobile phones. ► Studies that use and test these new technological trends are now emerging.