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We are now in the midst of another cold and flu season. For those who desire a natural approach to supporting their immune system, acupuncture offers hope. Numerous studies have been conducted to verify physical changes in the body following acupuncture treatments. The NIH is a good source for those who are interested in the scientific validation of acupuncture. In a 2007 trial, blood samples were taken before and 72 hours after acupuncture treatment. Markers of impaired immune system function (chemotaxis, phagocytosis and lymphatic proliferation) were changed favorably and most importantly these effects lasted for one month post treatment'