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MS-N119 · Supportive care · Human evidence · Appraised 24 October 2026

For adults with cancer who have opioid-induced constipation, does electroacupuncture improve bowel function when added to usual care?

Evidence at a glance

  • Evidence label: Promising single-trial evidence; confirmation needed
  • Benefit: A multicenter sham-controlled trial found more sustained spontaneous-bowel-movement responders with electroacupuncture.
  • Certainty: Moderate confidence in this trial’s short-term result, but only one definitive trial and no evidence about cancer outcomes.
  • Risk: Mostly minor needling effects in the trial; bleeding, infection and anatomical risks still matter in oncology.

What was studied

Population and design: 100 adults with cancer and opioid-induced constipation at six Chinese hospitals; 50 were assigned to electroacupuncture and 50 to sham electroacupuncture.

Studied regimen: Twenty-four sessions over 8 weeks, followed by 8 weeks without treatment. This is a research schedule, not a self-treatment prescription.

What the evidence found

The prespecified responder required at least three spontaneous bowel movements per week and at least one more than baseline in the same week for at least 6 of 8 treatment weeks. Response was 40.1% (95% CI 26.1%–54.1%) with electroacupuncture and 9.0% (0.5%–17.4%) with sham: an absolute difference of 31.1 percentage points (14.8–47.6; P<.001). Pain scores and opioid dose did not differ, so the study does not show analgesia or opioid sparing.

How to interpret it

One country, a modest sample, specialized practitioners and a sham procedure that may not be physiologically inert limit generalizability. The outcome was bowel function, not tumor response, recurrence or survival.

Practical safety context

Trial-related effects were minor (two local hematomas and one episode of minor bleeding in the electroacupuncture group). In practice, coordinate with oncology when platelet counts are low, anticoagulants are used, skin is infected or irradiated, or anatomy is altered. Use sterile, single-use needles and a qualified practitioner.

Questions for the care team

  • Is the symptom or complication being caused by something that needs conventional treatment first?
  • Would blood counts, anticoagulants, infection risk, surgery, radiation effects or implanted devices change whether this is safe?
  • What outcome will we track, and when should we stop if it is not helping?

Funding and conflicts

Funding was reported from Chinese national and municipal research programs; the funders were reported as having no role in the study. Authors reported no competing interests.

Sources

Last literature search: 24 October 2026. Record appraisal: 24 October 2026. This page is educational and does not replace individualized medical advice. Symptom improvement must not be interpreted as evidence of tumor response, delayed recurrence or longer survival.