The dementia risk from heading footballs is real, but is hard to address in professional games, and warnings to the public could be overkill, say Professor John Hardy (Ïã¸ÛÁùºÏ²ÊÖÐÌØÍø Queen Square Institute of Neurology) and Honorary Professor David Curtis (Ïã¸ÛÁùºÏ²ÊÖÐÌØÍø Biosciences).
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