Traditional Chinese medicine: a complete overview

Most people meet Chinese medicine in fragments. A card on ginger, a constitution test, an article about Yin and Yang. Each fragment is accurate, yet the system itself stays invisible. This article is the entrance hall of the encyclopaedia: it shows how the concepts interlock, why food occupies a place Western medicine never gave to dietetics, and which door to enter by depending on what you need.

Traditional Chinese medicine (中医 Zhōng Yī, literally “medicine of the Centre”) is neither a collection of grandmother’s remedies nor an abstract philosophy. It is a complete clinical system, codified more than two millennia ago, that reads the body as a moving landscape: currents that rise and fall, reserves that fill and empty, inner climates that drift out of balance. Once you grasp this framework, every food card, every article, every menu reads differently.

A medicine of process: what “traditional Chinese” actually means

The word “traditional” is misleading. It suggests a fixed body of knowledge handed down unchanged since the Han. The reality is more interesting: TCM is a medicine of continuous observation, written and rewritten over twenty-two centuries, absorbing corrections, new epidemics and disputes between schools with each dynasty.

Its founding gesture has stayed the same since the Huangdi Neijing (黄帝内经, the Yellow Emperor’s Inner Classic, compiled between the third and first centuries BCE): describe the body not as a machine made of parts, but as a process. Where Western anatomy asks “what is this organ made of”, TCM asks “what does this function do, in which direction does it move, what is it related to”.

The Chinese Lung is not primarily the organ an autopsy reveals: it is the function that descends Qi, governs the body’s surface and the skin, receives air and diffuses it. The Spleen is not the lymphatic organ surgeons remove without harm: it is the function that transforms food into Qi and Blood, raises the clear and holds the organs in place. This gap between anatomical organ and functional organ is the first thing to grasp; otherwise you read TCM as primitive anatomy and miss everything that matters.

The four concepts that carry everything

Four notions support the whole edifice. Each has dedicated articles in this encyclopaedia; here, the point is to see how they fit together.

Qi (气): what makes a function work

Qi is the most poorly translated concept in TCM. “Energy” makes it sound like a mystical fluid; “breath” is closer but insufficient. Qi is what makes a function active: Stomach Qi moves the food bolus downwards, Wei Qi (卫气) holds the defensive surface, Zong Qi (宗气) animates voice and breath. It is not a substance to own but an activity to maintain.

In practice, Qi has five canonical functions: moving, warming, defending, containing, transforming. Fatigue that settles in, recurrent chills, spontaneous sweating, a digestion that stalls: TCM reads these as Qi functions faltering. Our article on Qi in Chinese medicine details this physiology.

Yin and Yang (阴阳): the two slopes of every process

Yin-Yang is not a philosophy of good and evil. It is a measuring tool: every phenomenon has a material, cool, descending, resting slope (Yin) and a functional, warm, rising, active slope (Yang). Health is not a static balance between the two but a correct oscillation: Yang works by day, Yin restores by night; effort disperses, food and sleep reconstitute.

In dietetics this grid becomes immediate: a warm-natured food restarts, a cold-natured food settles, and the question is never “is this food good” but “good for which slope of which terrain”. The guide to Yin-Yang on your plate applies this law daily.

The Five Elements (五行 Wǔ Xíng): the map of relationships

Wood, Fire, Earth, Metal, Water: five phases that describe not material elements but cycles of relationship. Wood feeds Fire, Fire feeds Earth (ash fertilises), Earth feeds Metal, Metal feeds Water, Water feeds Wood. And each phase controls another: Wood drains Earth, Earth dams Water, Water extinguishes Fire.

This map connects the organs: a Liver (Wood) that stagnates invades the Spleen (Earth), which is why digestion seizes up under stress. A Kidney (Water) that is depleted no longer warms the Spleen, which is why digestive chill sets in with age. Chinese dietetics always thinks in chains, never in isolated organs: treating the Stomach without looking at the Liver pressing on it is treating the symptom and leaving the cause. Our Five Elements guide for practitioners unfolds this cartography.

The organ systems (脏腑 Zàng Fǔ): functions in network

Five Yin organs (Heart, Lung, Spleen, Liver, Kidney) store the essences; six Yang bowels (Stomach, Small Intestine, Large Intestine, Gall Bladder, Bladder, Triple Burner) receive, transform and evacuate. Each Yin-Yang pair forms an axis: Spleen-Stomach for food transformation, Liver-Gall Bladder for circulation and decision, Kidney-Bladder for water and inheritance, Lung-Large Intestine for Qi and elimination, Heart-Small Intestine for the Shen and discernment.

What matters here: Chinese organs are functions, not lobes. “Spleen deficiency” says nothing about your anatomical spleen; it describes a weakened food transformation, with precise signs: loose stools, post-meal fatigue, a pale tongue coating, a tendency to puffiness.

Chinese dietetics: food as the first remedy

This is where TCM meets the Yin Shi project, and where it differs most sharply from Western medicine. In the Chinese tradition, food is not an adjunct to treatment: it is its first layer.

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“The physician who knows how to treat illness with food is the finest of physicians.”

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Sun Simiao, the Tang physician whom tradition calls the “king of remedies”, devotes an entire chapter of his treatise to 食疗 (shí liáo), food therapy, and places it before herbal prescriptions. The order is doctrinal: treat with the plate first, because food acts on the terrain every day, three times a day, where a remedy intervenes only once.

In practice, Chinese dietetics evaluates every food on four axes:

Aliment	Nature	Saveur	Méridiens	Actions	Précautions
Thermal nature (性)	Cold → Hot	Net thermal effect	All	Ginger warms, watermelon cools: regardless of serving temperature	Match to terrain (Yang deficiency = warm up)
Flavour (味)	Five flavours	Sour, bitter, sweet, pungent, salty	One target organ per flavour	Sweet tonifies the Spleen, pungent circulates, bitter descends and dries	Excess of a flavour injures its organ
Tropism (归经)	Direction	Organic target	Variable	A food goes where its tropism sends it: salt to the Kidney, citrus to the Liver	Tropism refines; it is not enough alone
Action (功效)	Functional	What the food does	Variable	Tonify Qi, nourish Blood, drain Dampness, bring rebellious Qi down	The action reads in the context of terrain

What tradition evaluates for each food, and why it changes the plate

A food is therefore never “good” or “bad” in itself: it is warm or cold, tonifying or draining, ascending or descending, and its value depends on the terrain receiving it. This is the heart of the Yin Shi project: the same tomato is a precious cooling food in Full Heat and a digestive cost in Yang deficiency.

What modern science confirms, and what remains a framework

Intellectual honesty requires separating two planes.

What research partially validates. Acupuncture’s effectiveness on certain chronic pain conditions is recognised by solid meta-analyses (the NIH and WHO include it in their recommendations for specific indications). Chinese pharmacopoeia has yielded major molecules: artemisinin, extracted from sweet wormwood (青蒿 Qīng Hāo) on an indication from Ge Hong, earned Tu Youyou the 2015 Nobel Prize in medicine. Ginger for nausea, berberine for glucose metabolism, mushroom polysaccharides for immunity: the literature exists.

What remains a framework. Qi, meridians and Zang-Fu syndromes have no demonstrated anatomical equivalent. They are functional models, ways of organising clinical observation that have proven their empirical worth over two millennia without being measurable entities. Saying “Spleen Qi deficiency” names not a lesion but a coherent clinical picture guiding an effective dietary prescription. The Yin Shi encyclopaedia holds this double reading everywhere: the TCM framework first, the confrontation with science second, never the reverse.

Where to start, depending on your need

The encyclopaedia is vast; four doors depending on what brings you here:

• Understand the fundamentals: start with Qi, then Blood, then the Yin-Yang plate guide. These three notions cover 80 % of what follows.
• Locate your terrain: the Yin Shi energetic test gives your profile; the article on Sasang Korean constitutions shows how another Asian tradition categorises terrain.
• Address a common symptom: the clinical articles (chronic fatigue, digestive troubles, malnutrition in older adults) start from the symptom and work back to terrain.
• Get cooking: the therapeutic cooking guide for beginners gives the first moves without jargon.

FAQ

Is Chinese medicine scientifically recognised?

Partially. Acupuncture for certain chronic pain conditions and several pharmacopoeia-derived molecules (artemisinin, berberine) have solid validation. The founding concepts (Qi, meridians, Yin-Yang) belong to a functional framework rather than measurable anatomical entities. TCM is used as a complement, never a substitute for medical diagnosis.

What is the difference between Chinese medicine and Chinese dietetics?

Chinese dietetics (食疗 shí liáo) is a branch of TCM, alongside acupuncture, pharmacopoeia and qi gong. It applies the same concepts (thermal natures, flavours, tropisms) to everyday foods. Historically it is the first layer of treatment: Sun Simiao placed it before remedies.

Can Chinese medicine and conventional treatment be combined?

Yes, and this is arguably the most relevant use: TCM works on terrain and prevention, conventional medicine treats established disease. The two complement each other provided you inform your doctor, particularly regarding herbs, which have real drug interactions.

Is TCM the same as Korean or Japanese medicine?

All three share the same roots (the Huangdi Neijing, the Five Elements) then diverged: Japan developed Kampo and abdominal palpation, Korea the four-constitution Sasang typology, China today’s standardised TCM. Yin Shi refers primarily to the Chinese tradition while citing these sister traditions where they clarify a point.

A framework to take away

Chinese medicine comes down to one sentence: the body is a set of flows and transformations, and food is the first tool for steering them. Qi animates, Yin-Yang measures, the Five Elements connect, the organ systems organise, and the plate acts on all of it three times a day. You now hold the map; each article in the encyclopaedia details a province. The logical next step: know your terrain with the Yin Shi test, then read the card of whichever concept caught your attention most.