Glucose Homeostasis and Apple Polyphenols

The primary objective is to investigate the effect of apple polyphenol supplementation for 12 weeks on glucose homeostasis in prediabetic individuals. Further, this study has three secondary objectives: 1) to investigate whether daily supplementation at breakfast and dinner with apple polyphenols for 12 weeks affects the rhythm of glucose uptake over the day and reduces fasting glucose levels and postprandial glucose peaks; 2) to determine the effect of daily supplementation with apple polyphenols for 12 weeks on biomarkers of metabolic health; 3) to assess whether daily supplementation with apple polyphenols for 12 weeks alters fecal SCFA concentrations and fecal microbiota composition.