Both strategies were designed within a hypocaloric dietary pattern (-30%) in order to achieve the American Association for the Study of Liver Diseases (AASLD) recommendations for the management of non-alcoholic liver disease (loss of at least 3-5% of body weight appears necessary to improve steatosis, but a greater weight loss, up to 10%, may be needed to improve necroinflammation). At this time the participants are individually supervised and encouraged to follow with the dietary planning instructions assigned. Furthermore, at baseline, 6, 12 and 24 months anticipated variables are obtained. Both dietary groups receive routine control (weight, body composition, strategy adherence) and dietary advice daily by phone (if they need help) and face to face at the time of routine control.