28th November 2019

medlineplus
14

Do blueberries cause black stool?

Eating black licorice, lead, iron pills, bismuth medicines like Pepto-Bismol, or blueberries can also cause black stools. Beets and tomatoes can sometimes make stools appear reddish. In these cases, your doctor can test the stool with a chemical to rule out the presence of blood.

So, what foods can cause black stools?

The following can discolor your bowel movements:
  • black licorice.
  • blueberries.
  • dark chocolate cookies.
  • red-colored gelatin.
  • beets.
  • red fruit punch.

Do blueberries make you poop green?

Black stools, for example, can result from eating blueberries or taking medications that contain bismuth subsalicylate, such as Pepto-Bismol. Your poop may be green if you eat a lot of green vegetables, such as spinach and broccoli, because these foods contain large amounts of the green pigment chlorophyll.
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