Manual acupuncture versus sham acupuncture and usual care for prophylaxis of episodic migraine without aura: multicentre, randomised clinical trial.

The short version

This randomized controlled trial with 150 participants, published in The BMJ, tackled the biggest criticism of acupuncture research head-on: that acupuncture only beats "sham" needling when the sham is badly designed. Seven hospitals in China enrolled adults with episodic migraine without aura who had never received acupuncture before, so nobody could tell true needling from fake by experience. Participants were randomized to twenty sessions of manual acupuncture (real needles at true points, with the classical rotation and lift-thrust manipulation), twenty sessions of non-penetrating sham (blunt needles at non-acupuncture points that never break the skin), or usual care alone, all over eight weeks. Blinding was formally tested and held — 79% of the real-acupuncture group and 75% of the sham group believed they had received penetrating needles, a statistical dead heat (P=0.891). Migraine days and attacks were counted in four-week blocks through week 20. Real acupuncture pulled ahead of sham, and the gap grew after treatment ended. By weeks 17–20, manual acupuncture had cut 3.9 migraine days per four weeks versus 2.2 for sham (adjusted difference −2.1 days, 95% CI −2.9 to −1.2, P<0.001 — meaning roughly two extra migraine-free days a month attributable to true needling), and attacks dropped by 2.3 versus 1.6 (P<0.001). Both needle groups beat usual care alone, which is itself informative: part of acupuncture's benefit comes from the ritual and attention of treatment, and part — the two extra migraine-free days — from the needling itself. No severe adverse events were reported, and 147 of 150 participants completed the analysis. For the millions of people with migraine who cannot tolerate preventive drugs — or prefer not to start them — this trial provides unusually clean evidence that manual acupuncture has a real, specific preventive effect beyond placebo. The benefit emerged gradually, months into follow-up, suggesting patience matters. The trial ran in a single country and followed patients only to week 20, so durability beyond five months remains an open question.

Key findings

• This BMJ trial randomized 150 acupuncture-naive adults with episodic migraine to real manual acupuncture, non-penetrating sham needling, or usual care across seven Chinese hospitals.
• The sham was truly inert - blunt needles that never broke the skin - and blinding was formally verified, answering the standard criticism that acupuncture only beats poorly designed placebos.
• By weeks 17-20, real acupuncture prevented about two more migraine days per month than sham (adjusted difference -2.1 days, p<0.001), with the benefit growing after treatment ended.
• No severe adverse events occurred across twenty sessions, and nearly all participants (147 of 150) completed the study.
• The authors argue these results support manual acupuncture for people who cannot tolerate or prefer to avoid preventive migraine drugs, and that guidelines should take note.

Common questions