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blood in the stool

blood in the stool can come from anywhere in the digestive tract, such as the stomach or intestines. depending on where the blood is coming from and how fast it is moving, it may be bright red, reddish brown, or black like tar.

a little bit of bright red blood on the stool or on the toilet paper is often caused by mild irritation of the rectum. for example, this can happen when straining hard to pass a stool or if a hemorrhoid is present.

certain medicines and foods can affect the colour of stool. diarrhea medicines (such as pepto-bismol) and iron tablets can make the stool black. eating lots of beets may turn the stool red. eating foods with black or dark blue food colouring can turn the stool black.

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this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

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