“…Four randomised controlled trials were identified that presented evidence on diets differing in the proportion of carbohydrate to fat or protein in relation to blood glucose response two hours after an oral glucose tolerance test (Swinburn et al, 2001;Lasker et al, 2008;Due et al, 2008a). No further trials were identified in the update search (Cardio-metabolic review, diabetes chapter p185) (Racette et al, 1995;Golay et al, 1996;Golay et al, 2000;Swinburn et al, 2001;Helge, 2002;Colette et al, 2003;Landry et al, 2003;Lovejoy et al, 2003;Wolever & Mehling, 2003;Clifton et al, 2004;Segal-Isaacson et al, 2004;Dansinger et al, 2005;Lofgren et al, 2005;Raatz et al, 2005;Petersen et al, 2006;Howard et al, 2006b;Ebbeling et al, 2007;Gardner et al, 2007;Maki et al, 2007b;Phillips et al, 2008;Due et al, 2008a;Frisch et al, 2009;Grau et al, 2009;Kirk et al, 2009;Morgan et al, 2009;Sacks et al, 2009). Five trials were subsequently identified in the update search (Goree et al, 2011;Haufe et al, 2011;Shikany et al, 2011;Tierney et al, 2011;Brooking et al, 2012 Nearly all trials employ energy restricted weight loss diets that vary both carbohydrate (between 5% and 65% energy) and fat (between 18% and 40% energy) between groups.…”