Part 2 of 6 in the "Stress, sleep and TCM theory" series. The list of the other five is at the foot of this part.
Part 1 gave the definitions: 「肝主疏泄」 is about whether qi is flowing. This part answers a different question — why, in TCM theory, mood, appetite and the menstrual cycle sit under the same word.
The answer is in 「疏泄」 — the free flow — and in what it governs: qi movement.
The short version
- The WHO's 2022 standard terminology for TCM describes qi movement as classifiable into four basic forms: ascending, descending, exiting and entering. 「肝主疏泄」 is, in the theory, the functional system that keeps those four from jamming — that reading is this article's, not the standard's own words.
- The mood thread: the same standard records 「怒伤肝」 — excessive anger damages liver qi and impairs the function of liver in maintaining the free flow of qi.
- The appetite thread: the standard's 「脾主运化」 and 「胃主通降」 are two digestive qi movements, and two pattern definitions join them to the free flow.
- The menstrual thread reaches only as far as 「肝藏血」. The standard does not spell out the step between the free flow and the cycle, and this article does not fill it in.
A note: this section is general information only. For conditions like these, follow your doctor's diagnosis and treatment, and seek medical attention when you need it.
First, the things that cannot wait
⚠️ A safety note: TCM and Western medicine complement each other; it is not a choice between them. Difficulties with mood and sleep have a layer that needs professional assessment, and a TCM consultation does not substitute for that assessment. Asking for help is not weakness — there is professional support for this.
Thoughts of harming yourself — this is not something to wait on. Call 999 now, or go to the nearest hospital emergency department. To talk to someone, the Ministry of Health's Talian HEAL 15555 is open every day from 8 am to 12 midnight, public holidays included; Befrienders KL is open 24 hours on 03-7627 2929. You can also contact your doctor.
All seven items, and why each one means seeing a doctor first, are in part 5.
A note: this section is general information only. For conditions like these, follow your doctor's diagnosis and treatment, and seek medical attention when you need it.

I. The seven emotions: where stress enters the discussion of 「肝」 and 「心」
Hong Kong's Chinese Medicine Regulatory Office writes, in its article on maintaining a healthy mental state, that TCM theory calls joy, anger, worry, overthinking, grief, fear and fright the seven emotions, and holds that an emotion taken to excess affects its corresponding organ system — anger the liver, joy the heart, for example.
This is where stress enters the TCM discussion of 「肝」 and 「心」.
Worth noting: the seven emotions are a set of correspondences, not a checklist. They do not tell anyone which one they are.
💡 Remember: the seven emotions are the theory's table of correspondences between emotion and organ system, not a scale for a reader to score themselves against.
II. What the free flow governs: "qi movement" (气机)
① What qi movement is. The WHO standard describes qi movement as classifiable into four basic forms: ascending, descending, exiting and entering. It carries a separate entry for 「升降出入」, described as the basic forms of qi movement.
「肝主疏泄」 — in the same standard, the liver maintains free flow of qi over the entire body — is, in the theory, the functional system whose job is to keep that ascending, descending, exiting and entering from jamming.
That is why the theory says 「肝喜条达而恶抑郁」: the standard's description is that liver qi needs to be soft and unobstructed. The 「郁」 in 「肝气郁结」 is this flow being held down.
The phrase "keep that ascending, descending, exiting and entering from jamming" is this article's reading of the two definitions above, not the standard's own words.
💡 Remember: the free flow governs qi movement — where qi goes, and whether it can get there. All three threads below grow out of that one sentence.
III. The three threads: mood, appetite, the cycle
② The mood thread. The WHO standard records 「怒伤肝」: excessive anger damages liver qi, impairs the function of liver in maintaining the free flow of qi, causes the qi to rise, and results in disordered qi and blood.
The direction runs: an emotion taken to excess → the free flow impaired → qi movement disordered. This is the path by which stress enters 「肝」 in the theory; the seven emotions in section I are the same idea. That line of arrows is this article's compression of the standard's sentence, not the standard's own form.
③ The appetite thread. In the theory, digestion is qi movement too. In the same standard, 「脾主运化」: the spleen digests water and food, absorbs and distributes nutrients; 「胃主通降」: stomach qi needs to be unobstructed and flow downward, so as to pass the primarily digested chyme down to the small intestine.
Two patterns in the standard join these up: its description of the liver–spleen disharmony pattern is that the pattern often occurs when liver qi stagnation affects the transportation and transformation of the spleen; its description of the liver–stomach disharmony pattern is that it often occurs when liver qi stagnation affects the descending of stomach qi.
In other words, in the theory's model, when the free flow jams, the two digestive qi movements are affected with it — which is why appetite and digestion file under 「肝」. That sentence is this article's reading of the definitions above, not the standard's own words.
④ The menstrual thread. In the standard, 「肝藏血」: the liver stores blood, regulates blood volume. The standard's description of the liver qi stagnation pattern also lists irregular menstruation in women.
That is the only item this article takes from that description, and it is here to show the concept's reach in the theory, not as a list to check against. The standard does not spell out the step between the free flow and the cycle, and this article does not fill it in.
All three threads are the theory's model, not a laboratory mechanism. What the Western account of stress says, and why the two languages do not translate into each other, is set out side by side in part 3. Which pattern applies, if any, is the practitioner's judgement after seeing the whole picture, and it is not in these passages.
Remember: one concept, three threads — mood, appetite and the cycle all hang, in the theory, on whether qi is flowing.
A note: this section is general information only. For conditions like these, follow your doctor's diagnosis and treatment, and seek medical attention when you need it.
The words used in this part
All four are the WHO standard's own vocabulary.
- Qi movement (气机) — the standard's description: the movement of qi, classifiable into four basic forms, namely ascending, descending, exiting and entering.
- Ascending, descending, entering and exiting (升降出入) — a separate entry in the standard: the basic forms of qi movement.
- Transportation and transformation (运化) — the two characters inside 「脾主运化」: in the standard, the spleen digests water and food, absorbs and distributes nutrients.
- Smooth downbearing (通降) — the two characters inside 「胃主通降」: in the standard, stomach qi needs to be unobstructed and flow downward, passing the primarily digested chyme down to the small intestine.
Frequently asked
Why does stress affect appetite? What does TCM say? In the theory's model, digestion is qi movement: the WHO standard's 「脾主运化」 and 「胃主通降」 are two of those movements, and the standard's descriptions of the liver–spleen and liver–stomach disharmony patterns join those two movements to liver qi stagnation. So the theory files appetite under whether qi is flowing. That is the theory's account, not a laboratory mechanism; what the Western account says about stress and stomach problems is in part 3.
Does liver qi stagnation make periods irregular? The standard's description of the liver qi stagnation pattern lists irregular menstruation in women, and this article takes only that one item, to show the concept's reach in the theory. The standard does not spell out the step between the free flow and the cycle, and this article does not fill it in — so there is no "the theory says it does" answer to this question. A change in your cycle needs a doctor's assessment in its own right; a pattern name does not explain it.
Does 「怒伤肝」 mean I am not allowed to get angry? No. That entry is about anger taken to excess impairing the liver's function of maintaining the free flow of qi. It states a correspondence inside a theory, not a rule of behaviour, and it is not a judgement about you.
Better not to: read the three threads as a self-test. The theory uses them to explain why several things are looked at together — not to decide who has what.
A note: this section is general information only. For conditions like these, follow your doctor's diagnosis and treatment, and seek medical attention when you need it.
The other five parts in this series
- Part 1: What 「肝气」 and 「心神」 mean — two definitions, and what they are not
- Part 3: The two languages side by side, and one crunch-season week
- Part 4: What TCM theory arranges day to day — six habits in one table
- Part 5: See a doctor first in these situations — seven signs, and the reason for each
- Part 6: What actually happens at the consultation — routine first, then the pattern, then the direction
👉 If you are not sure where to begin with your own stress and poor sleep, you are welcome to book an online consultation with HansMed, where a practitioner registered under the T&CM Act 2016 can assess it with you; if anything in part 5 applies, see a doctor first.
Sit with a licensed TCM practitioner from wherever you are.
HansMed Modern TCM
For general wellness education only — not medical advice. Consult a registered TCM practitioner for personal guidance.
Sources
- World Health Organization, WHO international standard terminologies on traditional Chinese medicine, 2022 (entries 116 · 136 · 138 · 141 · 193 · 231 · 245 · 325 · 1240 · 1310 · 1315) — https://www.who.int/publications/i/item/9789240042322
- Chinese Medicine Regulatory Office, Department of Health, Hong Kong, "Health Preservation in Chinese Medicine — Maintain a Healthy Mental State" — https://www.cmro.gov.hk/html/gb/useful_information/public_health/feature_articles/Health_Preservation_in_Chinese_Medicine-Maintain_a_Healthy_Mental_State.html
- Ministry of Health Malaysia, Hospital Pendang (Kedah State Health Department), Info Kesihatan 2024 (the Talian HEAL 15555 number and its hours) — https://jknkedah.moh.gov.my/hpendang/index.php?option=com_sppagebuilder&view=page&id=139
- Befrienders Kuala Lumpur (the 24-hour line) — https://www.befrienders.org.my/



