How might we moderate the rare but very real risk of headbanging? If you search for heavy metal in the National Library of Medicine database, most of what you find is on heavy metal contamination in fish, which “makes it difficult to establish clearly the role of fish consumption on a healthy diet” and perhaps helps to explain the quintupling of odds of autoimmune diseases, such as juvenile arthritis. But searching for the hazards of heavy metal also pops up entries on the “risks from heavy metal music.” In this study, researchers were talking about traumatic injuries from slamming around “dur...

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