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A 38-year-old member asked:

What causes gray stool?

1 doctor answer5 doctors weighed in
Dr. Ahmad M Hadied
Orthopedic Surgery 49 years experience
Biliary problems: Stool can be gray or clay-colored if it contains little or no bile. The pale color may signify a condition (biliary obstruction) where the flow of bile to the intestine is obstructed, such as, obstruction of the bile duct from a tumor or gallstone in the duct or nearby pancreas.

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A 32-year-old member asked:

Would iron cause dark gray stool?

1 doctor answer5 doctors weighed in
Dr. Charles Cattano
Gastroenterology 39 years experience
Silver vs. melena?: Dark-colored stools may result from iron supplements, foods you eat (like a lot of spinach), substances (like peptobismol), but most significantly suggests bleeding. When blood is denatured by acid in your stomach, as from ulcers, stools will turn tarry ("melena"). Blood may also be ingested from nose bleeds, bleeding gums. Silver-colored stool suggests bleeding from the biliary tree. Get checked.

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Last updated Apr 24, 2021
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