1. The apple contains more potassium, which can combine with the excess sodium salt of the human body and make it excreted from the body. When the human body consumes too much sodium salt, eating some apples will help to balance the electrolytes in the body. 2. The elements such as phosphorus and iron in apples are easily absorbed by the intestinal wall and have the effect of tonifying the brain and nourishing blood and tranquilizing the mind and sleeping. 3. Lower cholesterol: keep blood sugar stable and effectively lower cholesterol. 4. Anti-cancer: reduce the risk of lung cancer, prevent lead poisoning, proanthocyanidins can prevent colon cancer blood. 5. Respiratory duct cleaner: improve respiratory system and lung function, protect lungs from pollution and smoke.