has any ever had dark green stools?

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Regular Member

Date Joined Jun 2006
Total Posts : 199
   Posted 7/23/2006 9:50 PM (GMT -7)   
im just wondering if any1 has had any dark green stools??????????????

New Member

Date Joined Jul 2006
Total Posts : 7
   Posted 7/23/2006 11:17 PM (GMT -7)   
Hi tucci,

Although I have not had any myself, I have read about it before. I wouldn't panic if this is the first time it has happened. There can be many reasons why stool appears to be green. Think about the foods you ate; green, leafy vegetables contain chlorophyll which could be coloring the stool green etc.

Here are the most common causes of green stools:
- large amounts of green, leafy vegetables
- green or purple artificial coloring (popsicles, Kool-Aid, gelatin)
- iron supplements
- rapid transit or decreased colonic transit time.
any vitamins or supplements you took—even if they're not green in color.

If green stool continues or if your really worried about it I'd recommend calling your doctor. Especially, if you are experiencing diarrhea which can be an indication of other problems or could lead to dehydration.

Post Edited By Moderator (Admin) : 8/15/2006 11:48:40 AM (GMT-6)

Veteran Member

Date Joined Jun 2005
Total Posts : 2976
   Posted 7/24/2006 7:27 AM (GMT -7)   
Sometimes bile can appear as green (I don't know what shade). But if green bile is anything like yellow bile, then you'll know it when it burns you a new one down there.

Veteran Member

Date Joined Jan 2006
Total Posts : 1629
   Posted 7/24/2006 8:30 AM (GMT -7)   

You should see your doctor if this carries on. Could it be the medications you are taking?
cherish all your happy moments....they make a fine cushion for old age

Regular Member

Date Joined Oct 2005
Total Posts : 266
   Posted 7/24/2006 11:38 AM (GMT -7)   
I had greene stools and it seemed to happen right when i was first developing anxiety

Veteran Member

Date Joined Sep 2005
Total Posts : 617
   Posted 7/24/2006 7:37 PM (GMT -7)   
I have had an abundance of colored stools and yes there has been green ones, and it depends ,mostly on what you are eating...I asked my GI and he said that he is looking for dark black tarry stools , green is ok


Regular Member

Date Joined Dec 2005
Total Posts : 84
   Posted 7/25/2006 6:18 PM (GMT -7)   
Hi Tucci,
about green poop that you are experiencing, it could be due to intake on leafy green veg, please see below webpage about poop colour,


Hope this help.

Also I would like to ask everyone with IBS, do your poop sink or float?
All I did was make your link linkable.  :-)   --- Lil

Post Edited By Moderator (7Lil) : 7/25/2006 11:54:49 PM (GMT-6)

Veteran Member

Date Joined Apr 2005
Total Posts : 3269
   Posted 7/25/2006 10:55 PM (GMT -7)   
My poops usually sink. The only time they float is when I'm having D. My theory is that the quick transit time doesn't allow them to be dense enough to sink. ??? (I could be wrong though... just my own theory.)
Co-Moderator for the IBS Forum
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Veteran Member

Date Joined Sep 2005
Total Posts : 617
   Posted 7/26/2006 8:19 PM (GMT -7)   
From what i have read poops that float have a high "fat" content....Could be wrong but i read that on someone else's post..

New Member

Date Joined Dec 2008
Total Posts : 1
   Posted 12/29/2008 6:35 AM (GMT -7)   
Drinking grape juice can cause green stools....I know, you'd think purple.

Veteran Member

Date Joined Jul 2007
Total Posts : 1956
   Posted 12/29/2008 7:19 AM (GMT -7)   
Interesting topic, with older replies as well. I clicked on the link from 2006 provided from 1morechance. Very interesting read! What did I take away from that particular link? The reason why our dog sometimes eats her own poop. We've never been able to break her of it (she's 8 years old now). I pick up our yard once a day too. She does it oh once or twice a month still. And goes nuts over rabbit poop! Now I know why.....

Learn something new everyday on this forum! he he

Back to why poop can sometimes turn green. My stool turned an army green once, after I had eaten a small bowl full of fresh blueberries. This was when I had my temporary colostomy. My bag filled every 10 to 15 minutes and this went on for several hours. Later my Gastro doc explained how many tiny seeds are in any berry (strawberry, blueberry, red raspberry and finally blackberries, oh forgot one, cranberry). He said I should avoid berries in the future. And definitely not to eat a bowl full of them!
Marsky/Mary's story.....
- Diagnosed with rectal cancer, April 1999 - Stage I, no treatment necessary
(5 hour colon resection: 90% sigmoid removed, 15 inches of colon removed, gall bladder removed, given temporary colostomy)
- Colostomy reversal, June 1999
- Left with IBS/D symptoms, multiple bm's every day
- On a low residue diet at least 75% of the time
- Takes Colace 50 mg each evening

All in all I do okay, I just use the bathroom A LOT! But I survived and beat cancer!

Regular Member

Date Joined Nov 2008
Total Posts : 68
   Posted 1/2/2009 1:10 PM (GMT -7)   
Ahh, poop color. Now we're getting artistic here. I love how these discussions can flow.

Green poop can come from green food (load up on spinach sometime). But remember elementary art class? Green is a combination of the two primary colors yellow and blue. So if it isn't direct from eating green food. Then it will likely be from eating something blue, or blueish. The blue will mix with the stool which will typically have some yellowishness (not alway dicernable) due to the bile, and vwalla, the pallet turns green. The seed thing is interesting, but understandable, since the often contain concentrated substances that could contain the right color combinations.

The dark tarrish brown color mentioned above, is a concern because it indicates possible internal bleeding. As opposed to bright red blood which happens closer to the rectum.

Of course we eat things that contain reds, yellows, and blues, so class...what color does that make? Brown! Very good, you all get an A+

Stool density is basic physics. Oil (including fats) floats because it is less dense than water, but oily/fatty stool should not be a goal. Some fiber can survive the digestive process. It can hold water and air. The right mix of water, oil, and air will produce a stool that is slightly lighter or slightly heavier than water, so it may barely float or barely sink. That is the best, because that is the least difficult on your digestive tract. Hard dry rocks that drop quickly to the bottom, or runny acidic diarhea with floating particals are enemies of the body.

Dense stool is likely from insufficient quantity of oil, water, or fiber in the diet. Or too much time spent in the colon, absorbing the water, releasing the air (please excuse yourself) or compressing the fiber and other waste (which can be proof of peristalsis still working), but I digress, constipation is covered elsewhere on the site. We were discussing color here.

Well this has been fun, I think I'll go paint a picture now :-)

Regular Member

Date Joined May 2017
Total Posts : 53
   Posted 7/23/2017 8:29 AM (GMT -7)   
I did just today... I started a new probiotic yesterday. After reading the link below, thinking it must be affecting my iron. I did eat spinach yesterday (but I do most every day).
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