Apples are alkaline fruits whose main component is carbohydrates. They have very little protein and fat, while rich in inorganic substances such as vitamin C, sodium, potassium, and calcium. Vitamin C is good for the skin. Potassium helps discharge salt out of the body, thereby preventing and relieving high blood pressure. Apples are also rich in fiber, which helps clean the intestines and activate the secretion of gastric juice to promote digestion and enhance iron absorption. Furthermore, apples also function as a sedative that provides relief from tension. They are good for insomnia,...