Scientific Opinion on the substantiation of health claims related to “wheat dextrin” and maintenance of normal blood pressure (ID 844, 1682), maintenance of normal (fasting) blood concentrations of triglycerides (ID 844, 1682), maintenance of normal blood cholesterol concentrations (ID 844, 1682), reduction of post-prandial glycaemic responses (ID 845, 3096), increase in magnesium and/or calcium retention (ID 846, 3097), short chain fatty acid (SCFA) production in the bowel (ID 1681), decreasing potentially pathogenic gastro-intestinal microorganisms (ID 843, 1681) and maintenance of normal bowel function (ID 843, 1680) pursuant to Article 13(1) of Regulation (EC) No 1924/2006