British Runner Completed EIGHT Marathons Using COW Heart

Determined Scott Allen, 34, feared his running days were behind him after he failed a medical for the Rome Marathon two years ago. He was immediately pulled from the race after being diagnosed with the potentially fatal aortic regurgitation - a leaky heart valve. The shop worker then became so weak that he was unable to summon the strength even to make a cup of tea and needed open heart surgery that involved getting a valve replacement from a cow.