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Music boosts the body's immune system and is more effective than prescription drugs in reducing anxiety before a surgery, a research review from two psychologists at Montreal鈥檚 香蕉视频 suggests. "I think the promise of music as medicine is that it's natural and it's cheap and it doesn't have the unwanted side effects that many pharmaceutical products do," said Daniel Levitin, who co-authored the review recently published in the journal Trends in Cognitive Science.