In a study which looked at acupuncture and the immune system, acupuncture was found to counteract impairments of the immune system associated with anxiety. Thirty-four women aged 30 to 60 and suffering from anxiety, received ten acupuncture sessions, leading to complete remission in all cases. Interestingly though, blood samples showed that a variety of immune system functions eg. natural killer cell activity and phagocytosis, were improved following treatment.
(Effect of acupuncture treatment on the immune function impairment found in anxious women. American Journal of Chinese Medicine 2007;35)