[Minnie]

Originally Posted by SebC

Every time I read one of these stories, my first suspect is usually hypertrophic cardiomyopathy.

COD has been determined to be an anatomical abnormality of the heart, rarely detected.

The father of a teenager who died while running the Toronto marathon says his daughter died of an anatomical heart abnormality that is rarely detected.

Steven van Nostrand said a coroner determined the stress of the late stage of the marathon caused an artery to constrict, to the point that his daughter's heart stopped.

"One of her major arteries is not at the normal angle coming in through the heart," said van Nostrand. He said increased stress levels would cause the arteries to close off.

According to the father, they've been told the outcome could have been the same just from walking up the stairs.