Acupuncture and Moxibustion: Healing with Needles

A patient lies face down on a treatment table. The acupuncturist swabs a point on the lower back with alcohol, takes a thin sterile needle from its package, and taps it in — barely a prick, less than a mosquito bite. The needle slides through the skin and into the muscle. The patient reports a strange sensation: a dull ache, a spreading warmth, a kind of "grabbing" that radiates down the leg. "Good," says the acupuncturist. Deqi — "the arrival of qi." The needle stays. Ten more follow, placed at points along the leg, the ankle, the wrist, the head. The lights are lowered. The patient rests, needles in place, for half an hour. By the time they are removed, the chronic back pain that has resisted months of ibuprofen and physical therapy has, for the first time in years, eased. This is 针灸 (zhēn jiǔ) — acupuncture and moxibustion — the needling and warming branch of Chinese medicine, and one of the oldest continuously practiced medical procedures in the world.

Acupuncture is the part of Traditional Chinese Medicine that has traveled furthest beyond China's borders. It is practiced in hospitals in Berlin and Boston, covered by national insurance in Germany and France, recommended by the American College of Physicians for chronic low-back pain, and recognized by the World Health Organization for dozens of conditions. Yet for all its modern acceptance, its theory remains strange to Western ears — a medicine of meridians and qi, of points with names like "Hegu" (Joining Valley) and "Zusanli" (Leg Three Miles), of a body mapped not by anatomy but by energy.

How Acupuncture Works: The Classical View

According to Chinese medical theory, the body is traversed by a network of meridians (经络, jīng luò) — channels through which qi (气), the vital life energy, and blood circulate. There are twelve primary meridians, each associated with a specific organ system (lung, large intestine, stomach, spleen, heart, small intestine, bladder, kidney, pericardium, triple burner, gallbladder, liver), plus eight "extraordinary vessels" that supplement the network. The meridians run mostly along the body's surface, where they can be accessed, but they connect internally to their respective organs.

Along the meridians lie acupoints (穴位, xué wèi) — specific locations where the qi of the channel rises close to the surface and can be influenced. Classical acupuncture recognizes 361 standard acupoints, each with a name, a location, an indication, and a character. Hegu (合谷, LI-4), on the back of the hand between thumb and index finger, is used for headaches, toothaches, and facial problems. Zusanli (足三里, ST-36), below the knee, is the great tonifying point — used for fatigue, digestive weakness, and longevity. Neiguan (内关, PC-6), on the inner wrist, treats nausea, chest tightness, and anxiety — and is now routinely used in Western hospitals for post-operative nausea under the name "the P6 point."

Disease, in this system, is a disturbance of qi — deficiency where there should be abundance, stagnation where there should be flow, rebellion where qi moves in the wrong direction. Acupuncture works by inserting needles at selected points to correct these disturbances: tonifying deficient qi, moving stagnant qi, sedating excess, restoring proper direction. The physician chooses points by diagnosing the underlying pattern, often combining local points (near the site of pain) with distal points (on the hands, feet, or head) that influence the affected meridian. A typical treatment uses between five and twenty needles.

The Arrival of Qi: Deqi

The classical texts insist that for acupuncture to work, the physician must obtain deqi (得气) — literally "the obtaining of qi." This is the distinctive sensation that arises when a needle is correctly placed and the body's qi engages with it. Patients describe it as a dull ache, heaviness, warmth, tingling, or a spreading pressure — quite different from the sharp sensation of the needle's initial insertion. The physician, from the other end of the needle, feels a slight "drag" or "grabbing," as if the tissue has tightened around the metal.

Deqi is considered essential. The Huangdi Neijing (黄帝内经, "Yellow Emperor's Inner Canon"), the foundational text of Chinese medicine compiled around 200 BCE, says: "What is most important in acupuncture is the arrival of qi. If qi arrives, it is effective. If qi does not arrive, it is not effective." Modern researchers, attempting to translate this ancient concept, have found that deqi sensations correlate with the activation of specific sensory fibers (A-delta and C fibers) and with measurable changes in the brain's pain-processing regions on functional MRI. Whatever qi "really" is, deqi is a real, reproducible phenomenon — and clinical outcomes appear to correlate with its presence.

Moxibustion: Warming with Mugwort

The second half of 针灸 is 灸 (jiǔ) — moxibustion, the burning of the herb mugwort (艾草, ài cǎo, Artemisia vulgaris) over acupoints to warm them. Where acupuncture moves and disperses qi, moxibustion warms and tonifies it. The two are often used together — hence the paired name — and a classical saying holds that "when a disease cannot be cured by medicine and needles, moxibustion should be applied."

Mugwort is prepared by drying the leaves, grinding them into a soft spongy fiber called moxa, and shaping it into cones or sticks. The two main techniques are direct moxibustion, in which small cone-shaped pieces of moxa are placed directly on the skin (sometimes on a slice of ginger, garlic, or salt) and lit, and indirect moxibustion, in which a moxa stick — like a thick cigar — is held an inch or two above the skin and burned until the point becomes pleasantly warm. Modern clinics also use smokeless moxa and moxa-equipped acupuncture needles (a small ball of moxa is fixed to the handle of the needle and lit, sending heat down the shaft into the point).

Moxibustion is used for cold and deficient patterns: chronic fatigue, weak digestion, frequent colds, joint pain worsened by cold, breech presentation in pregnancy (a famous 1998 study in the Journal of the American Medical Association found moxibustion at the point Zhiyin, BL-67, on the small toe effective in turning breech babies). The smell of burning moxa — earthy, herbal, slightly like marijuana — is one of the most distinctive aromas of a TCM clinic, and many patients find the warming deeply relaxing.

What to Expect in a Session

A typical acupuncture session lasts 45 to 60 minutes. The first visit begins with a detailed intake — the four diagnostic methods of TCM (observation, listening, inquiry, pulse) — that may take an hour by itself. Subsequent visits are shorter. After the diagnosis, the patient lies on a treatment table (face up or face down, depending on the points), and the acupuncturist inserts between five and twenty needles at the selected points.

The needles themselves are extraordinary. Modern acupuncture needles are sterile, single-use, and extremely thin — typically 0.20 to 0.30 millimeters in diameter, far thinner than a hypodermic needle and about the width of a human hair. They are also solid, not hollow, and their tip is shaped to part the tissue rather than cut it, which is why insertion is almost painless. Once the needles are in and deqi has been obtained, the acupuncturist may manipulate them (twirling, lifting, thrusting) to strengthen the sensation, then leave them in place for 20 to 40 minutes. Many patients fall asleep during this resting phase — a sign of deep relaxation, not boredom.

In some styles, the acupuncturist may also apply electroacupuncture — small clips attached to pairs of needles that deliver a low-frequency electrical pulse, a modern refinement that provides continuous stimulation. Or cupping, in which glass cups are placed on the skin with a vacuum created by fire or pump, drawing blood to the surface to release muscle tension and move stagnant qi. Or tuina, the Chinese therapeutic massage. A complete TCM session is often a combination of these modalities, tailored to the patient's pattern.

Acute conditions may respond in one or two treatments; chronic conditions typically require a course of six to ten treatments, often once or twice a week, with periodic maintenance afterward. The acupuncture is usually accompanied by an herbal prescription and dietary advice, because in TCM, the needles are only one part of a holistic strategy.

WHO Recognition and Modern Research

Acupuncture's entry into the global mainstream began in 1971, when James Reston, a New York Times columnist covering Nixon's visit to China, had an appendectomy in a Beijing hospital and wrote about the post-operative pain relief he received through acupuncture. The article fascinated the American public, and within a few years, acupuncture clinics were opening in major Western cities.

In 1979, the World Health Organization held its first interregional seminar on acupuncture, and in subsequent publications listed dozens of conditions for which acupuncture had shown efficacy — including chronic pain, post-operative and chemotherapy-induced nausea, morning sickness, osteoarthritis, headache, dysmenorrhea, and stroke rehabilitation. The National Institutes of Health issued a consensus statement in 1997 reaching similar conclusions. In 2017, the American College of Physicians included acupuncture in its clinical guidelines for low-back pain. Acupuncture is now covered by national insurance in many European countries and by an increasing number of American insurance plans.

How does it work? Modern research points to several mechanisms. Needling stimulates A-delta and C sensory fibers, which modulate pain signals in the spinal cord. It triggers the release of endorphins, serotonin, and other neurotransmitters. Functional MRI studies show that acupuncture deactivates brain regions involved in pain perception and activates those involved in emotional regulation. The "gate control" theory of pain and the "diffuse noxious inhibitory control" system both help explain why needling one part of the body can relieve pain elsewhere. Whether these mechanisms fully explain the effects claimed by TCM theory is still debated — but the clinical evidence for many conditions is robust enough that even skeptical researchers generally accept that the needles do something real.

Acupuncture is not a cure-all, and TCM theory does not replace modern medicine for acute, surgical, or infectious disease. But for chronic pain, functional disorders, stress-related conditions, and the growing range of "gray zone" illnesses where biomedicine has little to offer, acupuncture has earned its place as one of the world's most widely used complementary therapies — and one of the great gifts of Chinese medical civilization to the modern world.