A 23-year-old female asked:
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my stool came out hard like rocks, but then turned to bright green, foul smelling, and slightly loose. what foods/conditions could be causing this?

1 doctor answer
Dr. David Ziring
21 years experience Pediatric Gastroenterology
It wasn't food: That caused your symptoms. The stool behind a hard impaction is liquidy. Colonic bacteria produce methane, a foul smelling gas. Having an impaction allows those bacteria to metabolize the dwelling food and create gas. Their peoducts can change the color of stool.
Answered on Apr 28, 2018
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