“A 2018 meta-analysis of over 20,000 patients in 39 high-quality randomized controlled trials found that acupuncture was superior to both sham and no acupuncture for back or neck pain, osteoarthritis, headaches and shoulder pain. These outcomes mostly persisted over time — even after 12 months of receiving treatment [emphasis added].”
Does acupuncture work for chronic pain? Here’s what the science says. – The Washington Post