Runner's diarrhea, also known as runner's colitis[1]orrunner's trots[2] is a condition that often affects distance runners characterized by an urgent need for a bowel movement mid-run.
The causes of runner's diarrhea remain under debate, although several theories include ischemia and mechanical trauma. The reduced incidence of diarrhea in cyclists would indicate the latter.[3] Diet is often cited as a common cause of diarrhea in distance runners, particularly with meals including berries and dried fruit.[4][verification needed]
Runner's diarrhea will normally clear up by itself from several hours to two days after running. As with all forms of diarrhea, replacement of fluids and electrolytes is advisable. Methods to prevent runner's diarrhea will vary between individuals, although it is advisable to consider examining the pre-running diet to determine potential trigger foods.[5]
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