U.S. doctors online nowAsk doctors free
A 21-year-old female asked:

I had a one off hard, dark stool. i'm not sure if it was black but should i be concerned as it was a once off? i'm 21 and in otherwise good health?

1 doctor answer3 doctors weighed in
Dr. Charles Cattano
Gastroenterology 40 years experience
Altered color stool: Color of stool varies with foods, speed of emptying of the GI tract, medications ; supplements ingested, gut flora (may vary per individuall), additives (like blood), subtractions (like absent bile), infection/exposures, inflammation, ; other factors. Probably okay if a single occurrence but persistent dark stool warrants exam ; treatment. Avoid nsaids, aspirin, etoh 4 now to minimize bleed risk.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Jun 30, 2020

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.