Oranges have cooling thermal nature. This is a fruit with sweet-and-sour flavor, it is general tonic for weak digestion and poor appetite, oranges regenerate body fluids; helps cool and moisten those who are dry and over heated from disease processes, physical activity, or hot weather. Oranges have been precious for inflammatory, highly acidic diseases such as arthritis; they also help lower high fever; their vitamin C/ and bioflavonoid content advantages for those with weak gums and teeth. The peel has gi-stimulating, digestive, and mucus resolving actions similar to grapefruit peel above. The inner white lining, placed directly on the eyelids, helps to dissolve eye cysts. Tangerines make a good substitute for commercial oranges because they have many of the same properties but are sprayed less with chemicals.