Reports claiming ALS caused by head trauma lacks scientific validation

A recent study1 suggesting that amyotrophic lateral sclerosis (ALS) may be attributed to "repetitive head trauma experienced in collision sports" lacks scientific epidemiological evidence to support this claim. In a review of the 12-patient study, several experts specializing in motor neuron diseases challenge the findings as entirely pathological and without clinical merit. Their editorial, which aims to dispel doubts of Lou Gehrig's ALS diagnosis, is now available online in the peer-reviewed journal Muscle & Nerve.

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