The present invention provides dietary compositions comprising mulberry extract, coffee extract, bean extract, optionally, dietary fibers, and a nutraceutically acceptable carrier. The present invention further provides methods for preventing the increase in postprandial hyperglycemia and hypoglycemia, hyperinsulinemia and diseases and disorders associated therewith, including, endothelial dysfunction, inflammatory conditions, oxidative stress, hyperlipidemia, and consecutive pathologies like insulin resistance, diabetes, visceral obesity, hypertension and cardiovascular diseases.
