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A member asked:
Lately i have black stool after running, even if it's just a one mile run. colonoscopy and endoscope are clean. what would cause the black stool?
A doctor has provided 1 answer
Blood-other causes: Black stool ( melena) can be caused from old blood in the stomach/intestines, . Licorice ( black) can also cause this. Call your physician for upper endoscopy results and photos, get routine blood testing.Defintely do not ignore!
Answered 5/9/2014
4.1k views
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