LEA PATERSON / SCIENCE PHOTO LIBRARY LEA PATERSON / SCIENCE PHOTO LIBRARY
Acupuncture. Close-up of an acupuncture needle held by an acupuncturist. According to traditional chinese philosophy, ill-health occurs when "meridians" in the body, through which "life- force" flows, become blocked. Acupuncturists aim to restore health by inserting needles at appropriate sites on the affected meridians, altering the way the life-force flows. Scientific research suggests that the technique may have a pain-killing effect by triggering the release of endorphins (morphine-like compounds) in the brain.
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