ADIPOQ and Insulin resistance: Variability of biomarkers of insulin resistance and inflammation (adiponectin) at baseline and 8 weeks;Variability in biomarkers of insulin resistance and inflammation (CRP) at baseline and 8 weeks;Variability in gut microbial communities from human stool samples at 2 and 8 weeks;Fecal microbiota from resistant starch responders at 2 and 8 week;s