A timely reminder why the ALS ice bucket challenge is important

It has been criticised as an excuse for cynical celebrity posturing, a viral sensation that's meaning has slowly been lost by its dissemination through Vines, YouTube videos and eye-catching headlines.

But as Anthony Carbajal, who has been diagnosed with ALS, points out in this video - the ice bucket challenge has raised millions of pounds and immeasurable awareness to tackle a devastating, debilitating, deadly disease that pharmaceutical companies have so far failed to find a cure for.

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