Raw cranberry is more sour than lemon. Cranberries and bitter and sour, cranberries contain more vitamin C than lemons, the consumption of cranberries help the body's blood vitamin C concentration rise rapidly. Cranberries generally have antioxidant, detoxification, prevention of Alzheimer's disease, prevention of gastric ulcers and so on. Cranberries contain a special complex of concentrated tannins, which help inhibit the attachment of Helicobacter pylori bacteria in the intestines and stomach, preventing the occurrence of stomach ulcers. People with blood stasis should not eat cranberries.