Over the last 20 years, there has been an explosion of research of acupuncture. There have been over 13,000 studies conducted in over 60 countries, with nearly 1,000 meta-analysis summarizing the results. 

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The Acupuncture Evidence Project reviewed existing studies to summarize what the research has to say regarding acupuncture's effectiveness for 122 treatments over 14 clinical areas. They found some evidence of effect for 117 conditions. “Our study found evidence for the effectiveness of acupuncture for 117 conditions, with stronger evidence for acupuncture’s effectiveness for some conditions than others. Acupuncture is considered safe in the hands of a well-trained practitioner and has been found to be cost-effective for some conditions. The quality and quantity of research into acupuncture’s effectiveness is increasing.”

- Acupuncture Evidence Project, p. 55

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A few important studies demonstrate:

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