Many studies in recent years have shown that acupuncture is more effective than conventional treatments for lower back pain, though some researchers concluded that it's just a placebo effect - no more effective than sham acupuncture which doesn't penetrate the skin or places the needles in random points. I admit the existence of placebo effect, but the question is, to what extent it works? Can it work as well as real acupuncture does? In some studies, acupuncture was delivered for quite a lon...
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