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How Acupuncture Works: To Regulate, Not Just to Stimulate

  • 1 hour ago
  • 2 min read
IN 30 SECONDS What does a needle actually do? Two languages answer. The modern one speaks of nerve fibres, neurotransmitters and circulation. The older one speaks of regulating the Qi — tonifying a deficiency (Xu) or dispersing a fullness (Shi), and seeking the "arrival of the Qi" (De Qi). Today's practitioner holds both maps. Acupuncture is offered as a complement to usual care, with no promise of results.

Before choosing where to needle, the acupuncturist settles an older question first: tonify, or disperse? It is in that judgment — far more than in the location of the point — that the tradition placed its whole art. And it is through it that one best understands what a needle "does."

Acupuncture stimulates precise points along channels called meridians. Its mode of action can be described in two languages: the old one, of the Qi and its regulation; the modern one, of the nervous system and circulation. Here they are, side by side — with no promise of results, and as a complement to usual care.

The modern language: what the needle triggers

  • Nervous system — stimulating a point activates nerve fibres and prompts the release of neurotransmitters and the body's own opioids, which modulate pain and the body's response.

  • Circulation — local vasodilation improves oxygen supply and the clearance of metabolic waste.

  • Relaxation — the needle can trigger a relaxation response, lowering the sympathetic tone that keeps the body tense.

  • A whole-person approach — treatment considers the person as a whole: body, mind, way of life.

The old language: to regulate, not just to stimulate

For the classics, the needle does not merely "stimulate": it regulates. Depending on whether the picture showed a deficiency (Xu) or a fullness (Shi), the practitioner tonified or dispersed. The Lingshu — one of the two halves of the Neijing — puts it plainly: tonify what is empty, disperse what is full. The whole art lay in that discernment, long before the choice of point.

Before any effect at all, the ancients sought the arrival of the Qi — the De Qi: that diffuse sensation of heaviness or tingling around the needle, the sign that the point had "answered." Without it, they said, the gesture remained incomplete.

At bottom, everything converged on a single aim: to restore a free and balanced circulation of the Qi. It is an inherited theoretical grammar — one that the physiological mechanisms above now light from another angle — without, let us repeat, being proof of effectiveness or a promise.

Two languages, one gesture

Perhaps this is where contemporary acupuncture is most interesting: in the conversation between these two descriptions. One names fibres and mediators; the other, an emptiness to fill or a fullness to disperse. Today's practitioner need not pick a side: holding both maps, they adapt each treatment to the person in front of them.

For the scientific evidence, see our Acupuncture: Benefits and Evidence review.

Book an appointment

Curious about the experience of the needle — and the "De Qi"? We'll talk it through honestly, as a complement to your care. First visit 1 h 30, follow-ups 70 min.

In Plateau-Mont-Royal, open 7 days a week. Members of the OAQ and OPPQ. Insurance receipts issued on site.

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