U.S. doctors online nowAsk doctors free
A 42-year-old member asked:

What?couls cause?my stool to be dark green?

1 doctor answer1 doctor weighed in
Dr. Alfredo Garcia
Pediatrics 56 years experience
Stool color: Decomposed bile, which is originally green, gives stool its yellow color. Having said that, green stool may mean that bile has rushed through the intestines without being acted on by bacteria like during diarrhea. Another cause of green color is unabsorbed iron in the diet.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

Similar questions

A 33-year-old member asked:

What could cause my son's stool to be dark green?

2 doctor answers2 doctors weighed in
Dr. Thomas Riney
Pediatrics 37 years experience
Normal: Only colors of concern are white, black and bloody.
A 47-year-old member asked:

What causes stool to be black or dark green?

1 doctor answer2 doctors weighed in
Dr. Charles Cattano
Gastroenterology 39 years experience
Dark stool: 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.
A 41-year-old member asked:

What does it mean if I have dark green stools? Any foods cause that color in stools?

1 doctor answer4 doctors weighed in
Dr. Arthur Heller
Gastroenterology 43 years experience
Green foods: Dark green leafy vegetables, e.g. Spinach, kale, collard greens can cause dark green sttols; less commonly meds, vitamin/ mineral supplements can. Less common, bile. Can matter if diarrheal or formed. Infections can cause green diarrheal stool.
A 31-year-old member asked:

What can cause dark stool?

2 doctor answers2 doctors weighed in
Dr. Richard Bensinger
Ophthalmology 52 years experience
Diet, blood: Stool will vary from light to dark depending upon the diet. Diets rich is red meat for instance will darken the stool color. If there is GI bleeding then the stool may become black. This requires evaluation by your gastoenterlogist as the source of the bleeding must be discovered and corrected.
PA
A member asked:

Why is my stool dark green?

1 doctor answer1 doctor weighed in
Dr. Marc Lewbart
Emergency Medicine 19 years experience
Dietary sources: often time dark green stools are the result of diet. foods that have blue in them such as blueberries or other blue food coloring can cause dark green stools. If this persists after eliminating this from your diet then you may want to consider seeing a medical professional

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Dec 21, 2020

People also asked

Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership

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.