Sham Acupuncture Is Not Just a Placebo.

Area of Science:

• Integrative and Complementary Medicine
• Clinical Research Methodology

Background:

• Sham acupuncture is utilized as a control in acupuncture research to assess treatment efficacy.
• Current debates exist regarding the appropriate criteria for selecting sham acupuncture interventions.
• Existing sham acupuncture methods may possess specific physiological effects beyond placebo.

Purpose of the Study:

• To critically evaluate the characteristics and application of sham acupuncture in research.
• To differentiate the role of sham acupuncture from placebo controls in clinical trials.
• To provide guidance on the cautious use of the term 'sham acupuncture' in scientific literature.

Main Methods:

• Review of existing literature on sham acupuncture techniques and their purported effects.
• Analysis of the criteria for appropriate sham acupuncture control interventions.
• Discussion of the physiological and psychological effects associated with sham acupuncture.

Main Results:

• Sham acupuncture requires morphological similarity to verum acupuncture for effective blinding.
• Sham acupuncture can elicit non-specific and potentially specific physiological effects.
• The direct comparison of sham acupuncture to placebo drugs is considered unreasonable.

Conclusions:

• Sham acupuncture is not equivalent to placebo and exhibits distinct effects.
• Researchers should exercise caution when employing and defining sham acupuncture in clinical studies.
• Further refinement of sham acupuncture methodologies is necessary for robust acupuncture research.