I have stumbled upon an article on the mechanism of acupuncture in the latest issue of the journal of Nature.
A team of scientist from the University of Rochester, New York found acupuncture triggered an increase in neurotransmitter adenosine an incredible 24-fold at the punctured area. The study is important because it explains one of the mechanisms of how acupuncture works.
Listen to Scientific American podcast on the subject:
More details in Nature Neuroscience.
Update: there was substantial media coverage of this study including scientific journals like Scientific American and mainstream media including the New Zealand Herald. I’ve inserted a scanned image of the story in NZ Herald forwarded to me by one of my colleagues.