Health in BaZi
Diagnosis by the Five Elements

The BaZi chart (八字, "Eight Characters") is not only a tool for analyzing character, relationships, and career. Since ancient times, Chinese physicians and metaphysicians have used it as a predictive map of health. The principle is at once simple and profound: each of the Five Elements (Wu Xing, 五行 (wǔ xíng — "Five Elements")) governs certain organs and systems of the body. And when we see a serious imbalance in a chart — an excess, a deficiency, or a conflict — we get a precise indication of the vulnerable link.

This article is a foundational introduction to health diagnosis through the BaZi chart. We will look at how the elements relate to organs in Traditional Chinese Medicine (TCM, 中醫), what an excess and a deficiency of an element mean, how to read clash conflicts (沖) on the level of health, and what preventive measures the chart suggests.

1 The principle of "5 elements = 5 organ systems"

At the heart of Chinese medicine and metaphysics lies the model of Wu Xing — the five movements, or five elements. These are not "elements" in the European sense of the word (Empedocles, Paracelsus), but rather five phases of energy through which any life process passes. Wood — birth, Fire — growth and peak, Earth — stabilization, Metal — gathering and contraction, Water — rest and storage.

Each element corresponds to:

• A paired Yang organ (hollow, conducting — gallbladder, small intestine, stomach, etc.).
• A paired Yin organ (solid, accumulating — liver, heart, spleen, lungs, kidneys).
• A sense organ (eyes, tongue, mouth, nose, ears).
• A body tissue (tendons, vessels, muscles, skin, bones).
• An emotion (anger, joy, pensiveness, grief, fear).
• A color, taste, season.

This table is the foundation of all subsequent diagnosis. If you walk into any Chinese medicine clinic, you will see it on the wall in one form or another. For BaZi this is not a theoretical abstraction, but a working scheme: we look at which elements are in the chart, in what condition, and draw conclusions.

It is important to grasp one subtlety: the "element — organ" link works both ways. If you have an excess of an element, the corresponding organ may "boil over," working under excessive strain. If an element is lacking, the organ does not receive enough Qi energy and shows weakness. The third variant — the element is present, but it is being "hit," attacked by other elements — then the organ suffers from external pressure.

2 Wood = liver and gallbladder

The Wood element (木) in the chart is responsible for the liver / gallbladder pair, as well as for the system of tendons, muscular sheaths, the eyes, and the emotions of anger and frustration. In the classical tradition, Wood is "the general who plans the offensive": the liver is responsible for the "free flow of Qi" (疏泄, shū xiè), for the capacity for strategic planning and flexibility in decision-making.

This projects onto the BaZi chart as follows:

• Wood is weak or absent — weak detoxification, gallbladder problems, poor eyesight, low frustration tolerance, an anxious-asthenic state.
• Wood is in excess — hypertension, migraines, outbursts of anger, tendinitis, an "irritable everything" syndrome, insomnia with waking at 1–3 a.m. (the liver hours in TCM).
• Wood is attacked by Metal (especially Geng 庚) — a literal "axe to the liver": severe hepatopathologies, liver surgery, gallstones.

If your Day Master is Wood (Jia 甲 or Yi 乙), the liver is your "default weak spot," and under any stress it signals first. We will examine this in detail in a separate article on Wood.

3 Fire = heart and small intestine

Fire (火) governs the heart — "the emperor of the body" (君主之官) — and its paired organ, the small intestine. To Fire belong the vessels, the blood, the tongue, the emotions of joy and anxiety, as well as the Shen (神) — the Spirit, consciousness, clarity of mind.

In TCM the heart is not only a pump. It is the organ in which the Shen, our "self," resides. That is why problems with Fire in a chart often manifest as a dual clinical picture: bodily symptoms related to the heart / vessels and, at the same time, emotional disturbances — anxiety, insomnia, panic attacks, a defocused mind.

• Fire is weak — low blood pressure, cold extremities, bradycardia-type arrhythmia, apathy, depressive tendencies, poor microcirculation.
• Fire is in excess — hypertension, tachycardia, insomnia (especially with difficulty falling asleep), mouth ulcers, a red tongue, anxiety, type 2 diabetes.
• Fire is attacked by Water — sharp "extinguishing" events: heart attack, stroke, acute heart failure against a background of severe stress or hypothermia.

If the Day Master is Fire (Bing 丙 or Ding 丁), you need to watch your blood pressure especially closely and have an ECG done regularly. See the separate guide on Fire.

4 Earth = stomach, spleen, pancreas

Earth (土) is the "center" of the Wu Xing cycle, the support and the buffer. To it belong the spleen / pancreas (脾) — the system of digesting and transforming food into Qi and blood — and their paired organ, the stomach (胃). Also belonging to Earth are the muscles (as mass, volume), the mouth, the lips, and the emotion of "thinking / obsessive thoughts" (思).

The spleen in TCM is the main energetic engine. On its condition depend the entire immune system, muscular strength, the ability to concentrate, and a woman's menstrual cycle (through the sufficiency of blood). This is not the European filter-spleen, but rather a "functional module": the digestive tract + microbiome + metabolism + energetics.

• Earth is weak — poor appetite, flatulence, loose stools, poor absorption of food, low hemoglobin, constant fatigue, a tendency to gain weight on a low calorie intake.
• Earth is in excess — food stagnation, heaviness in the stomach, gastritis, reflux, abdominal-type obesity, diabetes, "muddy" conditions (edematous dampness, "tan 痰" — pathological phlegm).
• Earth is attacked by Wood — stress-induced gastritis, ulcers, IBS (irritable bowel syndrome), IBS flare-ups under stress. Wood "hits" Earth directly.

It is especially beneficial to strengthen Earth with warm cooked food, porridges, and broths, and absolutely not to "chill" it with raw salads, iced drinks, and sugar. A strong history of diabetes in the family is almost always a signal to check the Earth pillar in the chart.

5 Metal = lungs and large intestine

Metal (金) governs the lungs (肺) and the large intestine (大腸), as well as the skin, the nose, the hair, and the emotion of grief / sorrow. The lungs in TCM are "the chancellor to the emperor-heart": they are responsible for receiving the "heavenly Qi" (air, breath) and for protecting the body (Wei Qi, the defensive layer of immunity).

The skin is "the third lung." The state of the skin always speaks of the state of the lungs and of Metal as a whole. The same goes for the intestine: the large intestine is the "lower exit" of Metal, and chronic constipation or dysbiosis is a signal of weak Metal.

• Metal is weak — frequent acute respiratory infections, bronchitis, allergies, hay fever, asthma, dry skin, eczema, dermatitis, thin brittle hair, a tendency to catch colds in the off-season.
• Metal is in excess — constipation (especially chronic, with hard stools), coarsening of the skin, vascular rigidity, a tendency to stone formation (metal = "hardening"), emotional rigidity.
• Metal is attacked by Fire — severe pneumonias, bronchopneumonias, conditions with high fever, burns of the respiratory tract.

Day Master Geng (庚) or Xin (辛) — pay special attention to the lungs, especially in autumn (the season of Metal). See the detailed analysis of Metal.

6 Water = kidneys, bladder, ears, bones

Water (水) is the deepest element, responsible for the "essence" energy Jing (精), which is stored in the kidneys (腎). This is the "root" energy passed down from the parents at conception, plus everything we accumulate by living rightly.

To Water belong: the kidneys, the bladder, the reproductive system, the bones and teeth, the bone marrow, the brain (as the "sea of marrow"), the hair on the head, the ears, and the emotion of fear.

• Water is weak — constant fatigue, low libido, impotence, early menopause, problems conceiving, osteoporosis, hearing problems, lower-back pain, frequent nighttime urination, premature graying and balding.
• Water is in excess — edema, cystitis, urolithiasis, hydronephrosis, depressive states with deep fear, hyperactivity of the thyroid gland (through its link with Jing), libido with compulsiveness.
• Water is attacked by Earth — pyelonephritis, nephropathies, stress-induced cystitis, depression from "suffocation" (Earth "smothers" Water).

If the Day Master is Water (Ren 壬 or Gui 癸), the kidneys are the main zone of prevention. See the separate analysis of Water.

7 An excess of an element — one set of illnesses

When some element occupies 40–50% or more of the total weight in a chart, we speak of its excess. This is an overabundance of the very same energy that, in moderate dose, would be a blessing. And like any excess, it becomes a pathology.

The logic of excess is simple: "where it is dense, it burns." An overheated, overexcited element produces the characteristic "hot" diseases of its organ:

To assess an excess, you need to correctly calculate the "weight" of an element: this is not simply the number of signs, but takes into account the rooted, hidden elements (藏干), the position, the strength of the season, and so on. Do this through a professional BaZi calculation, not "by eye."

8 A deficiency of an element — a different set of illnesses

The opposite situation — when an element is lacking (less than 5–7%) or is absent altogether. The logic is the reverse: "where it is empty, it is weak." The organ does not receive enough energy, works at a minimum, and becomes depleted.

Deficiency illnesses often have a different character: sluggish, chronic, draining, poorly responsive to "hot" remedies. These are the "cold," "empty" syndromes of TCM.

• Deficiency of Wood — a weak liver, poor detoxification, hypotension, apathy, muscular hypotrophy, weak tendons (frequent sprains), a dull gaze, low motivation.
• Deficiency of Fire — cold extremities, low blood pressure, "cold-type" depression, bradycardia-type arrhythmia, poor circulation, apathy, a lack of joy.
• Deficiency of Earth — weak digestion, poor absorption, anemia, pallor, low immunity, frequent colds, muscular weakness.
• Deficiency of Metal — weak lungs (recurrent bronchitis), dry skin, hair loss, problems with discipline, rigidity, grief "for no reason."
• Deficiency of Water — low libido, infertility, impotence, osteoporosis, tinnitus, hearing problems, lower-back pain, premature graying, memory problems.

9 Clash conflicts in the chart = injuries to the organ

A Clash (沖) is a "collision" of opposing Earthly Branches. In the cycle of twelve branches there are 6 pairs that "clash": 子-午 (Rat-Horse, Water-Fire), 丑-未 (Ox-Goat), 寅-申 (Tiger-Monkey, Wood-Metal), 卯-酉 (Rabbit-Rooster, Wood-Metal), 辰-戌 (Dragon-Dog), 巳-亥 (Snake-Pig, Fire-Water).

When such a collision arises in the natal chart itself or comes through transit (for example, in the year pillar), it is often accompanied by acute events for the corresponding organ:

• 子-午 clash (Water-Fire) — cardiovascular events, problems with the kidneys and heart simultaneously. Often a stroke or heart attack.
• 寅-申 / 卯-酉 clash (Wood-Metal) — surgery on the liver or gallbladder, or injuries to the respiratory system. Also injuries to the limbs (Wood = tendons, Metal = bones).
• 巳-亥 clash (Fire-Water) — diseases of the genitourinary system in men, cardio-renal crises.
• 辰-戌 clash (Earth-Earth) — stomach, gastritis, pancreatic problems, diabetic crises.
• 丑-未 clash (Earth-Earth) — digestion, the spleen, the female organs (through their link with blood reserves).

Especially dangerous are triple conflicts: for example, the chart has 子, while the year pillar brings 午, and the Da Yun decade also brings 午. This is a "double clash," and the risk of an acute event rises sharply.

10 Prevention by the chart

The main idea of health in BaZi is not to "cure" something, but to prevent it in advance. The chart reveals the "weak link," and a wise person gives it heightened attention without waiting for complaints.

A universal scheme of prevention

1. Determine your Day Master and your dominant / weak element. This is the basic agenda of your health for life.
2. Strengthen the weak element through foods, colors, activities, directions. If Water is weak — more dark foods, black beans, walnuts, seafood, the North direction, the colors black/blue.
3. Restrain the excess through the opposing element. An excess of Fire is restrained by Water (swimming, cool foods), an excess of Metal by Fire (warm food, activity).
4. Watch the Da Yun — the great Luck Pillars. If a cycle of an element arrives that attacks your weakened organ, strengthen yourself in advance.
5. Track the annual clash conflicts. Before a year in which you have a clash with the target organ, undergo a preventive examination.
6. Take the season into account. Spring = Wood, summer = Fire, late summer = Earth, autumn = Metal, winter = Water. In its "strong" season an element can "boil over," and it needs balancing.

Basic rules of hygiene by element

• Wood: sleep from 11 p.m. to 3 a.m. — the hours of the gallbladder and liver. Limit alcohol, fatty and fried food. Walk regularly, stroll in the forest.
• Fire: do not overheat, do not overexcite yourself in the evening, practice meditative techniques, cool fermented foods.
• Earth: warm cooked food, broths, porridges, no iced drinks or raw salads in the morning, eating on a schedule.
• Metal: breathing practices (qigong, bodyflex), humidifying the air, cleansing the intestine with fiber, regular walks in fresh air.
• Water: warm clothing over the lower back, keeping the feet warm, no overexertion, regular calm sleep, minimizing fears and chronic stress.

When to see a doctor — without fail

BaZi is a chart of predisposition, not a diagnosis. Any of the following symptoms require an immediate in-person examination by a specialist:

• Acute pain in the chest or abdomen, especially with radiation;
• A sharp decline in vision or hearing;
• Any "unexplained" bleeding, hematomas, blood in the stool or urine;
• Prolonged (more than 3 weeks) insomnia, anxiety, or depression;
• Unexplained weight loss of more than 5 kg in a month;
• A persistent rise or drop in blood pressure.

The cycle of five articles continues with a detailed analysis of each element. If you are interested in a specific organ or your Day Master, go to the corresponding article:

• Liver and gallbladder — through Wood
• Heart and small intestine — through Fire
• Kidneys and reproduction — through Water
• Lungs and intestine — through Metal