A 31-year-old member asked:
can impacted stool in large colon and rectum cause black stools? what are your expert opinions?
1 doctor answer
Dr. Glenn Messina answered
34 years experience Aesthetic Medicine
No: Darker but not black. Black stool can be from blood entering and mixing in the stool high up in the GI tract notably stomach and duodenum. Black can also be from iron pills and high iron intake in consuming a lot of high iron meals like spinach and green leafys. East to rule out blood with a simple smear at the doctors office. that's my advice.
Answered on Nov 8, 2017
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