The London marathoner who died after collapsing near Buckingham Palace was using a supplement named Jack3D, according to a Jan. 30 Sports Illustrated Report. The supplement contains DMAA or dimethylamylamine, which is prohibited by the World Anti-Doping Agency.
Even so, Claire Squires, the 30-year-old marathoner who died after using the supplement last April, was able to buy the supplement legally in the U.K. because it was not banned until August of last year.
Claire Squires' cause of death, according to the coroner Philip Barlow, was,
"DMAA ... on the balance of probabilities, in combination with extreme physical exertion, caused acute cardiac failure, which resulted in her death."
Her boyfriend Simon van Herrewege said,
"She innocently took a supplement which at the time was entirely legal and widely available on the high street and somewhat worryingly apparently used by so many others. It is clear that there needs to be far better supervision of the so-called health foods and supplements industry so that no more tragedies like this happen again, causing other families to have to go through what we have been through this past year."
Claire Squires was running in the London Marathon to raise money for suicide prevention. Her untimely death spurred more than $1 million in donations. Now, the news of the supplement's part in her death will hopefully save other marathoners' lives in the future. The London Marathon will amend their advice to runners to include details about supplements. Hopefully other marathons will follow in adding supplement advice for runners.
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