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Bloating
Green poop
Clay like stool
Abdominal bloating
Hard pebble like stool
Stool is green
Bloated belly
Not seeing your symptoms? No worries!
Normal stool can vary in color. Greenish stools can be due to supplements. However, persistently black and shiny stool may be a sign of internal bleeding, which needs medical attention. White, clay-like stools can also indicate a liver problem.
Your doctor may ask these questions to check for this disease:
No treatment is required.
Reviewed By:
Scott Nass, MD, MPA, FAAFP, AAHIVS (Primary Care)
Dr. Nass received dual medical degrees from the David Geffen School of Medicine at UCLA and Charles R. Drew University in Medicine and Science. He completed Family Medicine residency at Ventura County Medical Center with subsequent fellowships at Ventura, University of North Carolina-Chapel Hill, George Washington University, and University of California-Irvine. He holds faculty appointments at Keck School of Medicine of USC, Loma Linda University School of Medicine, and Western University of Health Sciences.
Content updated on Sep 2, 2025
Following the Medical Content Editorial Policy
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Q.
Coffee Poop: Is Your Morning Habit Normal or a Health Warning?
A.
Coffee poop is usually normal, caused by coffee triggering the gastrocolic reflex, colon contractions, and digestive hormones, and it can happen even with decaf. Seek care if you have diarrhea, pain, blood, severe urgency, weight loss, or symptoms that worsen or wake you from sleep, since issues like IBS, reflux, dairy intolerance, or anxiety-related gut sensitivity may be involved. There are several factors to consider; see below for practical tips to reduce symptoms and clear guidance on when to talk to a doctor.
References:
* Müller, C. D., & Müller, M. (2020). Coffee and the gut: an extensive review. *Nutrients*, *12*(6), 1776.
* Rao, S. S. C., Beaty, J., & Chamberlain, M. (1998). Effects of coffee on distal colon motility in healthy volunteers. *Gut*, *43*(6), 767-771.
* Wong, L. L., Yeo, B. H., & Ng, W. S. (2023). The Impact of Coffee Consumption on Gut Microbiota and Gastrointestinal Health: A Narrative Review. *Nutrients*, *15*(21), 4614.
* Boekema, P. J., Samsom, M., & Smout, A. J. (1999). Coffee, caffeine, and gastrointestinal function: facts and fiction. *Alimentary Pharmacology & Therapeutics*, *13*(7), 841-849.
* Sung, A., Park, J. H., Kim, K. J., Chung, S. J., Kim, N., Lee, H. S., & Lee, D. H. (2018). Coffee consumption and risk of functional constipation: A systematic review and meta-analysis. *Gastroenterology Research and Practice*, *2018*, 9812675.
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Ubie’s symptom checker demonstrated a Top-10 hit accuracy of 71.6%, surpassing the performance of several leading symptom checkers in the market, which averaged around 60% accuracy in similar assessments.
Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v11. Lacy, B. E., & Patel, N. K. (2017). Rome criteria and a diagnostic approach to irritable bowel syndrome. Journal of clinical medicine.
https://www.mdpi.com/2077-0383/6/11/992. Lacy, B. E., Mearin, F., Chang, L., Chey, W. D., Lembo, A. J., ... & Others. (2016). Bowel disorders. Gastroenterology.
https://www.sciencedirect.com/science/article/pii/S00165085160022253. Fukudo, S., Hongo, M., Kaneko, H., Takano, M., ... & Others. (2015). Clinical Gastroenterology.
https://www.sciencedirect.com/science/article/pii/S1542356514012452