7.Sierra M, Garcia JJ, Fernández N, et al. Effects of ispaghula husk and guar gum on postprandial glucose and insulin concentrations in healthy subjects. Eur J Clin Nutr. 2001 Apr;55(4):235-43. http://www.ncbi.nlm.nih.gov/pubmed/11360127
8.Ziai SA, Larijani B, Akhoondzadeh S, et al. Psyllium decreased serum glucose and glycosylated hemoglobin significantly in diabetic outpatients. J Ethnopharmacol. 2005 Nov 14;102(2):202-7. http://www.ncbi.nlm.nih.gov/pubmed?term=16154305
9.Sood N, Baker W L, Coleman C I. Effect of glucomannan on plasma lipid and glucose concentrations, body weight, and blood pressure: systematic review and meta-analysis. American Journal of Clinical Nutrition 2008; 88(4): 1167-1175. http://www.ncbi.nlm.nih.gov/pubmed/18842808