The doctor who performed the post-mortem on Claire Squires, who died during last year's London Marathon, has told an inquest that she died of heart failure, likely complicated by the supplement DMAA.
The caffeine-like stimulant was in the runner's drink, and has since been banned in the UK.
"DMAA causes increased heart rate. On the balance of probability I think the DMAA was a contributing factor to her death' Dr Van Der Walt said.
More top news
Smoke was seen for miles around today after a Weatherspoons pub caught fire in south east London.
Lord Montagu, who founded the National Motor Museum at Beaulieu, has died aged 88 following a short illness.
Expensive fares and late arrivals make Britain's railways "second rate" compared to European rivals, a study has found.