The possible health benefits of consuming cranberries include lowered risk of urinary tract infections, prevention of certain types of cancer, improved immune function, decreased blood pressure and more. Antioxidant compounds in cranberries such as oligomeric proanthocyanidins (OPC's), anthocyanidin flavonoids, cyanidin, peonidin and quercetin may prevent cardiovascular disease by counteracting against cholesterol plaque formation in the heart and blood vessels. Further, these compounds help the human body lower LDL cholesterol levels and increase HDL-good cholesterol levels in the blood.