Acupuncture is an alternative medicine methodology originating in ancient China that treats patients by manipulating thin, solid needles that have been inserted into acupuncture points in the skin. According to Traditional Chinese medicine, stimulating these points can correct imbalances in the flow of qi through channels known as meridians. Scientific research has not found any histological or physiologicalcorrelates for qi, meridians and acupuncture points, and some contemporary practitioners needle the body without using the traditional theoretical framework.
Current scientific research indicates that traditional forms of acupuncture are more effective than placebos in the relief of certain types of pain and post-operative nausea. Other reviews have concluded that positive results reported for acupuncture are too small to be of clinical relevance and may be the result of inadequate experimental blinding, or can be explained by placebo effects and publication bias.