6 doctors weighed in:

Black stools during the menstrual cycle--from uterus or bowel?

6 doctors weighed in
Dr. Sheila Goodman
Obstetrics & Gynecology
3 doctors agree

In brief: Bowel

Black stools can be caused by dietary changes, supplements or bleeding in the bowel.
If this happens every month, you should get it checked out. It could be related to endometriosis but you need to rule out bowel problems like colitis, polyps or even cancer.

In brief: Bowel

Black stools can be caused by dietary changes, supplements or bleeding in the bowel.
If this happens every month, you should get it checked out. It could be related to endometriosis but you need to rule out bowel problems like colitis, polyps or even cancer.
Dr. Sheila Goodman
Dr. Sheila Goodman
Thank
Dr. Denise Elser
Gynecology
2 doctors agree

In brief: ? endometriosis

Black stools are usually a sign of blood in the bowel.
If the lower bowel bleeds, then red will be seen in or on the stool. Black stools usually mena that the upper digestive tract has blood, as in stomach or upper bowel. Either way black stools can be GI bleed and can be serious and needs to be checked.

In brief: ? endometriosis

Black stools are usually a sign of blood in the bowel.
If the lower bowel bleeds, then red will be seen in or on the stool. Black stools usually mena that the upper digestive tract has blood, as in stomach or upper bowel. Either way black stools can be GI bleed and can be serious and needs to be checked.
Dr. Denise Elser
Dr. Denise Elser
Thank
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