Gastrointestinal bleeding in marathon runners.

  title={Gastrointestinal bleeding in marathon runners.},
  author={F A Halvorsen and James Lyng and St{\aa}le Ritland},
  journal={Scandinavian journal of gastroenterology},
  volume={21 4},
Gastrointestinal bleeding has been proposed to be a contributing factor in the development of 'runner's anaemia'. To study the incidence of gastrointestinal bleeding, 2-3 prerace and 2-3 postrace faecal samples from 63 marathon runners were tested for the presence of blood. Five of the participants had faecal blood before but not after the race. A reasonable explanation for the bleeding was found for four. Eight runners (13%) had positive tests for faecal blood after the competition. Clinical… CONTINUE READING