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A comprehensive look at stool odors and what they mean
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Your bowel movements tell you a lot about what’s going on in your body, so you’re probably alarmed if your stool has suddenly developed a metallic odor. Breathe easy, though—in most cases a slightly metallic or rust-like odor isn’t a particularly big deal. But still, it’s probably worth investigating. In this article, we’ll help you figure out why your stool is smelling strangely. We’ll also cover the other common stool odors you might run into based on your diet and gut bacteria.
Things You Should Know
- Stool typically smells like metal because of excess iron, which is used to create the hemoglobin in your red blood cells.
- If you see bright red blood along with the metal smell, don’t worry. It’s probably a minor issue (like hemorrhoids), although you should see a doctor soon to be safe.
- Dark red or black blood is serious, since it indicates you’re bleeding further up in your digestive tract. See a doctor ASAP, especially if you have stomach pain.
Steps
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Expert Interview
Thanks for reading our article! If you’d like to learn more about the digestive system, check out our in-depth interview with Muhammad Khan, MD, MPH .
References
- ↑ https://www.hopkinsmedicine.org/health/conditions-and-diseases/gastrointestinal-bleeding-or-blood-in-the-stool
- ↑ https://www.steadyhealth.com/medical-answers/4-reasons-your-stool-has-a-metallic-smell
- ↑ https://www.healthdirect.gov.au/foods-high-in-iron
- ↑ https://www.steadyhealth.com/medical-answers/4-reasons-your-stool-has-a-metallic-smell
- ↑ https://my.clevelandclinic.org/health/symptoms/14612-rectal-bleeding
- ↑ https://www.mountsinai.org/health-library/symptoms/stools-foul-smelling
- ↑ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2198910/
- ↑ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7503525/
- ↑ https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/high-fiber-foods/art-20050948
- ↑ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153313/
- ↑ https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/digestion/faq-20058348
- ↑ https://www.insider.com/guides/health/conditions-symptoms/why-does-my-poop-smell-so-bad
- ↑ https://www.gov.mb.ca/healthychild/healthybaby/kits/scoop_on_poop.pdf
About This Article
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