Diet should not be biased Ancient doctor Zhang Congzheng recognized early: “Five flavors are valuable and should not be biased.” Li Dong Yuan in the “Spleen and Stomach” mentioned: “As for the five flavors, the mouth hankering and want to eat, must be self-restraint, do not make too much, too much is also hurt its right.” It means that only picking what you like to eat is bound to cause partial eating and hurt the internal organs. “The five flavors are a little thin, it can nourish people, refreshing; a little thick with their internal organs are injured.” Meaning that a slightly lighter diet is good for health, and the opposite hurts the internal organs. This means that Chinese medicine has long recognized that diet can cause disease, not only that, but also discusses in detail the different organs injured. “Taste too sour, the liver to Jin, spleen is extinct. Taste too? Salty, the bone gas labor, short muscle, heart gas suppression. Taste too sweet, the heart gas panting full, black, the kidney is not balanced. Taste too bitter, the spleen is not moistened, the stomach is thick, taste too pungent, the tendons are depressed and relaxed, the spirit is central. Therefore, careful and five flavors, bone and tendons soft, blood to flow, membrane reasoning to dense, such as the bone to fine, careful way as the law, long have the life of heaven. “Eat more salty, the pulse condensation weeping and change color; eat more bitter, the skin haggard and hair plucked; eat more pungent, the tendons are urgent and claws withered; eat more acid, the zou and lip uncovered; eat more sweet, the bone pain and hair fall. This five flavors of the injury.” Chinese medicine is an empirical science, many phenomena observed, the explanation may not be very scientific or not yet revealed by modern science, but it does have an early understanding of the harmful effects of partial food.