How Severe Can Kidney Yang Damage Be? Yang Deficiency, Always Cold, Needing Ginger with Every Bowl of Congee?
Search terms this page answers: yang deficiency / always cold / constantly feeling cold / only warm congee feels right / belly turns cold the moment the congee cools / belly afraid of cold / body hot with phlegm yet afraid of cold / yang deficiency (yang xu)
Medical terms: yang deficiency · spleen-kidney yang deficiency · mingmen fire decline (ming men huo shuai) · spleen-earth deficiency-cold · fire failing to generate earth (huo bu sheng tu)
Opening: hidden inside Doctor Xue Lizhai’s case records are three lives lost
Doctor Xue Lizhai (Xue Ji), director of the Imperial Medical College in the Ming dynasty, left behind mostly stories of brilliant cures. Today’s chapter is different — three cases, three men, and in the end all three died. Xue Lizhai deliberately recorded these cases that could not be saved, as a warning to the whole world: once yang qi is damaged through and through, the consequences can be devastating.
💬 Note from Doctor Luo: Most doctors write up the cases they cured — it makes them look skilled. But Xue Lizhai was different: he even recorded these “failed cases.” When a patient was treated wrongly and harmed, he wrote the whole process down, precisely to tell you: this is how prescriptions can cost a life. That is the mark of a truly great physician.
Case one: Kuang Zijing of the Court of Imperial Entertainments — pale face, exhausted spirit, growing thinner with every treatment
The first patient was called Kuang Zijing, an official in the Court of Imperial Entertainments (Guanglu Si, the office in charge of palace banquets). What were his symptoms? A pale complexion and an exhausted, weary spirit — he always looked worn out, the classic picture of insufficient upright qi and inadequate yang. Even more worrying, he ate little and could not digest (shi shao nan hua): whatever he swallowed seemed to sit in his belly, never breaking down.
By all logic, this called for building up the upright qi. But what had the previous doctors given him? Er Chen Tang (Two Aged Ingredients Decoction) to transform phlegm, together with fire-clearing herbs and qi-regulating, qi-lowering herbs — the earlier physicians saw “food will not digest” and concluded it was stagnant qi, so they threw the whole combination at him: transform phlegm, clear heat, regulate qi.
What happened? His body grew thinner day by day, and his food intake dropped day by day. Digesting food had been hard before; now he could hardly eat at all.
💬 Note from Doctor Luo: Notice — “growing thinner day by day, eating less day by day” appeared only after a stretch of treatment. That shows the yang qi was being worn away bit by bit, not by one or two doses. By this point, “just supplement the spleen a little” was no longer enough — the damage was already severe.
Xue Lizhai examined him and said: this is spleen-earth deficiency-cold — the yang qi of the spleen-earth is insufficient. How should it be treated? The rule is to supplement the mother of earth (fa dang bu tu zhi mu) — and who is the mother of earth? The mingmen fire, the life-gate fire. The spleen-earth depends on kidney yang and the mingmen fire to warm and nourish it, so the treatment is to warm and supplement kidney yang.
And the result? Kuang Zijing did not believe it. He only quietly supplemented his spleen and stomach. In the end, he passed away.
💬 Note from Doctor Luo: Here is the key point — if the spleen and stomach had been supplemented from the very beginning, the outcome might not have been so grave. But the earlier medicines had already done their damage: transforming phlegm and clearing heat wore the yang down further and further, weakening the upright qi still more. At that stage, supplementing the spleen-earth alone was no longer enough — treatment had to go to the kidney, because the patient was already depleted to a serious degree. But he could only see the spleen-stomach problem in front of his eyes, and so he delayed until it was too late.
Case two: Luo of the Ministry of Works — midsummer, and yet his belly was afraid of cold
The second patient, surnamed Luo, worked in the Ministry of Works. The most interesting part of this case is the timing — it happened in midsummer, the height of summer heat, and yet his complaint was: his belly feared cold, while the surface of his body feared heat — the moment he felt warm he could not stand it and broke into sweat. And when he drew in one breath through his nose, his whole belly felt cold; his body was deeply averse to cold and wind.
💬 Note from Doctor Luo: A belly that fears cold and wind is the classic sign of yang deficiency. The surface heat and sweating are the illusion; the cold in the belly is the truth. When judging whether a person has yang deficiency, you must not be fooled by the heat that shows on the surface.
He also had one very odd habit: with every bowl of warm congee he had to add a good amount of fresh ginger, and he was used to it. If the congee came off the fire and cooled even a little before being served, his belly immediately felt cold inside — it had to be piping hot.
Xue Lizhai quoted the Neijing (Yellow Emperor’s Classic of Internal Medicine): “The more you warm him and he still does not feel warm — this means there is no fire” (yu re zhi bu re, shi wu huo). You heap hot things on him and his body still does not register warmth — that shows the fire inside is insufficient. What should be used? Bawei Wan (Eight-Ingredient Pill), that is, Guifu Dihuang Wan (Cinnamon and Aconite Rehmannia Pill) — to relight the mingmen fire, “augment the source of fire to dispel the yin gloom” (yi huo zhi yuan, yi xiao yin yi), melting away the yin-cold inside the body.
And what did this patient do — the strange part? Even though Xue Lizhai had such authority, he refused to listen. He went off and drank Si Wu Tang (Four Substances Decoction) on his own — nourishing blood and clearing heat at the same time.
💬 Note from Doctor Luo: Si Wu Tang nourishes blood; this is the approach of Doctor Zhu Danxi. When Zhu Danxi met someone with true blood deficiency and yin deficiency, using it was correct. But later generations imitated him without understanding him — nourish blood for everyone, clear heat at the sight of any heat — they abused Zhu Danxi’s medicines. This patient’s yang qi was already depleted to the extreme, and he went and nourished blood and cleared heat, using cold, cooling medicines to wound the yang further. In the end he, too, passed away. Think about it: a man who must eat a big bowl of ginger with every bowl of congee — how far had his yang fallen? When a prescription goes wrong at that stage, disaster follows immediately.
Case three: Chen Chanting of the Ministry of Works — fever with phlegm, the more he treated the phlegm the worse he became
The third patient, Chen Chanting, also served in the Ministry of Works. His complaint was a feverish body with phlegm. Hearing that — fever, phlegm — anyone would say: that must be a heat pattern! So he quickly took Er Chen Tang to transform phlegm, together with Huang Lian (coptis) and similar herbs to clear heat and regulate qi. The result: the illness grew worse (bing yi shen) — heavier with every dose.
By late winter of the jiachen year, Xue Lizhai was called in. When he felt the pulse: the left chi position was faint and fine (the chi position corresponds to the kidney), and the right guan position was floating and large, but weak on deep pressure (the spleen and stomach were weak). He judged: this is mingmen fire decline, unable to generate earth (ming men huo shuai, bu neng sheng tu) — the life-gate fire had declined, so it could no longer generate the spleen-earth. At this point, the illness should be treated by supplementing fire to generate earth, and there might still be hope — warm the kidney yang quickly, and the patient could be saved.
But this patient would not listen either. He insisted on the same medicines: Er Chen Tang to transform phlegm, Huang Lian to clear heat and move qi. The spleen-earth grew weaker and weaker. By the following year, in the intercalary first month of the yisi year, the disease had reached its end. Xue Lizhai was called again; the pulse was about to scatter (yu tuo) — this was lung qi already exhausted. The spleen-earth had become so weak that earth could no longer generate metal — even the lungs could no longer be nourished. The qi of life had already died within. Xue Lizhai said: it can no longer be treated.
💬 Note from Doctor Luo: The Neijing teaches, “When vacuous, supplement its mother; when excess, drain its child” — when the spleen-earth is deficient, you must promptly supplement the “mother” that generates it, which is the mingmen fire, the kidney yang. Conversely, only in an excess pattern do you drain the “child” it generates. But here the kidney yang was already insufficient, and instead of supplementing, the patient drained it — using Huang Lian and Er Chen Tang to wear down the spleen and stomach, destroying the last traces of yang that remained. That is bound to end in disaster. With the first two cases you might still think “surely it cannot be that serious” — but by this third one, the whole process is written out plainly for all to see.
Yang qi: the red sun inside a person
After these three cases, what does Xue Lizhai want us to take away? Doctor Luo Dalun sums it up clearly: yang qi is the foundation of the body.
💬 Note from Doctor Luo: Doctor Zhang Jingyue (Zhang Jiebin) said that kidney yang is like a red sun — the most precious thing in the human body. Think of a person as a small boiler: when the fire is strong, the water circulates and transforms, everything runs normally. But if the fire is put out and the boiler goes cold, it is just a pool of dead water, no different from the cold table beside it — that is no longer a living being. This is not to say yang is all that matters and yin does not; yin and yang must stay balanced. Yin is the material foundation — the blood, the fluids — and yang is what transforms and moves them. But once yang is wounded, the consequences are very severe indeed.
Modern people have far too many chances to wound their yang
Doctor Luo then brings the lesson back to today: people nowadays have far too many opportunities to damage their yang — cold drinks, air conditioning, staying up late. For all these reasons, people with insufficient yang qi are extremely common.
💬 Note from Doctor Luo: There are practitioners who go south and expect to find abundant yang because of the hot climate — only to discover that in the south, too, the vast majority of people have insufficient yang. This is the common condition of society as a whole, and young people especially: the air conditioning is on full blast, bedtime gets later and later, and drinks must be iced. People with insufficient yang are as numerous as hairs on an ox. And the patients in these three cases were already weak to begin with — a slightly cold medicine and they were gone. That tells us: when the body is fragile enough, even the smallest change can bring a fatal result.
Doctor Xue Lizhai’s three reminders: protect yang, use medicines with care, treat the root
Finally, Doctor Luo condenses the lessons of these three cases into three points — this is also what Xue Lizhai wanted to say:
First, value the kidney yang. This is one of Xue Lizhai’s central academic ideas — he placed great weight on the yang of the spleen and kidney, especially kidney yang. People who are severely ill, or ill for a long time, will inevitably drag the kidney down in the end; the kidney is the root.
💬 Note from Doctor Luo: Second, do not casually take medicines that harm yang. I have seen many people who “took the medicine the wrong way round”: from trivial cases of people popping cold formulas like Niu Huang Jie Du Wan (Bezoar Detox Pill) for no real reason, all the way up to doctors prescribing great piles of sheng shi gao (raw gypsum) and heat-clearing herbs for the elderly — I am shocked every time. Can the body take that? When your spleen and stomach are very weak, phlegm cannot be transformed away — a spleen that weak produces phlegm by itself, so transforming phlegm alone does nothing. Build the spleen and stomach up, and it will handle the phlegm on its own. If at that point you only transform phlegm and clear heat, you wound the last of the yang, and the living body instantly loses its balance. So everyone should learn a little diagnostic knowledge: know when it is yang deficiency, and be able to recognize the false appearance of heat — many yang-deficient people look hot on the surface, but inside they are already depleted to the extreme. Third, treat the root of the illness. When you find the root problem in the kidney, it is often easy to resolve; if you only work on the branch, on the surface, you spend your effort and get nothing back.
With these three lives, Xue Lizhai wrote his warning — and in the end it comes down to one sentence: protect your yang, and do not take your medicine the wrong way round.
Organized from Doctor Luo Dalun’s lecture explaining the case records of Doctor Xue Lizhai; the cases come from the Case Records of Doctor Xue Lizhai (薛氏医案).