Rational Food Combination
Rational Food Combination
Consuming a single type of food cannot maintain health, as certain essential nutrients—such as specific essential fatty acids, amino acids, and some vitamins—cannot be synthesized in the body from other substances and must be obtained directly from food. No single natural food contains all the nutrients required by the human body. Therefore, to sustain health, different foods must be combined and consumed together.
Chinese people have long recognized this. The *Huangdi Neijing* states: "Five grains nourish, five fruits assist, five livestock benefit, five vegetables supplement. When their flavors and properties are harmonized, they replenish essence and qi." "Grains, meats, fruits, and vegetables—these are all essential for nourishment." This comprehensively summarizes major dietary components—cereals, meats, vegetables, and fruits—and highlights their primary role in nourishing essence and qi. People must choose them appropriately based on needs.
According to Traditional Chinese Medicine theory, food pairing is also important. Food pairings fall into two categories: synergy and antagonism. Synergy includes mutual enhancement (*xiang xu*) and mutual assistance (*xiang shi*). Antagonism includes opposition (*xiang fan*), inhibition (*xiang sha*), fear (*xiang wei*), and mutual destruction (*xiang e*). These principles are vital for proper dietary combination.
*Xiang xu* refers to using similar foods together to enhance each other’s effects—for example, lotus root stewed with pear jointly clears lung heat and nourishes lung yin. *Xiang shi* means using one food primarily and another as auxiliary to enhance the main food’s effect—for example, ginger and brown sugar decoction enhances ginger’s warming and dispersing action. *Xiang fan* means two foods used together may produce adverse effects—for example, persimmons should not be eaten with pork, and sweet potatoes should not be eaten with eggs. *Xiang sha* means one food reduces the adverse effects of another. *Xiang e* means one food weakens another’s efficacy. *Xiang wei* means one food mitigates the adverse effects of another—for example, ginger alleviates the diarrhea and rash caused by broad beans.