Separating evidence from claim
Traditional Chinese Medicine is not one thing. It is a collection of practices — acupuncture, moxibustion, cupping, manual therapies and a large pharmacopoeia of herbal formulas — with different histories and very different levels of evidence behind them. Treating them as a single package makes it impossible to say anything honest about any of them.
So this article separates two questions. What has reasonable trial evidence behind it? And what is asserted confidently but not supported? The gap between those categories is wide, and it runs through the middle of TCM rather than around its edges.
Where the evidence is reasonable
The strongest case is for acupuncture as a treatment for post-operative nausea and vomiting. Systematic reviews in the Cochrane style, examining stimulation of the PC6 wrist point, have repeatedly found evidence that it reduces nausea and vomiting after surgery and anaesthesia, with effects for some outcomes comparable to commonly used antiemetic drugs. The reviews are cautious: trial quality varies, blinding is difficult, and effect sizes shrink when analysis is restricted to the most rigorous studies.
There is also reasonable, if more mixed, evidence for acupuncture in some chronic pain conditions, particularly chronic neck pain and chronic low back pain, where systematic reviews report modest benefits over sham treatment or usual care. The word modest matters. These are small average improvements in pain scores, not cures, and findings differ between reviews and between conditions.
Where the evidence does not hold up
The claims that fail are usually the largest ones. There is no good evidence that herbal medicine alone treats cancer, and none that it substitutes for surgery, chemotherapy, radiotherapy or immunosuppressive treatment in autoimmune disease. Where trials exist, they generally test herbal formulas as an addition to conventional treatment, for symptom control or quality of life, and often with methodological weaknesses.
The distinction is not academic. A patient who delays effective treatment while taking a herbal formula loses time that cannot be recovered. That is the harm, and it does not require the herb to be toxic.
What the evidence supports, and where to be sceptical
The table sets out common interventions and what can reasonably be said about each. It summarises published evidence. It is not a recommendation for your case.
| Intervention | Evidence quality | Reasonable use | Where to be sceptical |
|---|---|---|---|
| Acupuncture for post-operative nausea and vomiting | Moderate; systematic reviews of heterogeneous trials | Adjunct to standard antiemetic care, if the team agrees | Assuming it removes the need for antiemetics |
| Acupuncture for chronic neck or low back pain | Modest; small average effects across reviews | Part of a broader pain plan with physiotherapy | Expecting a cure, or delaying investigation |
| Acupuncture for anxiety or poor sleep | Weak to uncertain | Comfort, if the patient finds it helpful | Substituting it for treating a mood disorder |
| Herbal formulas during cancer treatment | Weak; small trials of poor quality | Symptom control inside a supervised oncology setting | Any claim that herbs treat the cancer itself |
| Herbal formulas instead of conventional therapy for autoimmune disease | Not supported | None as a replacement | Any advice to stop prescribed immunosuppression |
| Cupping, moxibustion and manual therapy | Limited and mixed | Comfort and mobility in a safe setting | Assuming benefit beyond symptom relief |
How TCM is delivered inside Chinese hospitals
In Chinese hospitals, TCM is generally delivered alongside conventional care rather than instead of it. Large public hospitals have a department of traditional Chinese medicine, and Tier-3 institutions typically describe their model as integrated medicine: herbs, acupuncture and manual therapy offered within a treatment plan that also includes surgery, drugs and rehabilitation. Conventional treatment is not withheld, and in serious illness it is the primary treatment.
That integration differs from how TCM is often sold abroad. A physiotherapy service may use acupuncture for pain; a surgical ward may offer it for nausea; an oncology service may use it for symptom control. The framing inside these hospitals is usually adjunctive, and senior clinicians tend to be explicit that it does not replace surgery, chemotherapy or antibiotics.
Safety issues that matter
What to watch for
Whatever the evidence says about benefit, the safety questions are concrete and worth taking seriously.
- Herb–drug interactions. Herbal preparations can change how the liver breaks down other medicines, altering blood levels of drugs with narrow safety margins, including anticoagulants, immunosuppressants and some chemotherapy agents.
- Liver injury. Some herbal preparations are associated with hepatotoxicity, and cases of clinically significant liver injury have been attributed to herbal and dietary supplements. Certain traditional preparations and unusual combinations carry more risk than others.
- Contamination and adulteration. Products may contain heavy metals, pesticides, undeclared pharmaceuticals or misidentified plant material, particularly where supply chains are poorly regulated.
- Telling your team everything. Your surgeon and anaesthetist need to know every herb, tea, powder and supplement you take, including anything you consider harmless. Interactions with anaesthetic agents and with anticoagulation matter most around an operation.
Questions to ask before adding anything
If you are considering adding something to a recovery plan, these are a reasonable starting point.
- What is this expected to do, and what evidence supports that claim?
- Does it interact with anything I already take, including my anticoagulant or immunosuppressant?
- Who will supervise it, and are they in contact with my surgeon or oncologist?
- Where does the product come from, and is it tested for contaminants?
- What side effects or warning signs should make me stop and seek help?
- If I stop this, what changes?
The bottom line
Traditional Chinese Medicine is, at best, an adjunct. Some components have reasonable evidence for specific, narrow uses, most convincingly acupuncture for post-operative nausea and vomiting, and modestly for some chronic pain. Much of what is claimed for herbal medicine, particularly as a treatment for cancer or autoimmune disease, is not supported.
An adjunct is something added to a treatment. It is not a substitute for one.
It never replaces the treatment your surgeon or oncologist has recommended, and a practitioner who suggests otherwise is giving you a reason to stop listening. Nothing here is medical advice. Whether to add anything to your recovery, and what, is a decision for you and the clinicians treating you.
References
- Cochrane Library — Stimulation of the wrist acupuncture point PC6 for preventing postoperative nausea and vomiting
- Cochrane Library — Acupuncture for neck disorders
- World Health Organization — Traditional medicine fact sheet
- World Health Organization — Traditional, complementary and integrative medicine
- World Health Organization — Medication without harm
- PubMed Central — Complementary and alternative medicines and liver disease
- NHS — Herbal medicines
- National Health Commission of the People's Republic of China — official English portal