Seeing blood when you poop is never considered “normal” and usually means there is bleeding somewhere in your digestive (gut) tract, from the anus/rectum up to the stomach or small intestine. It can be from something minor like hemorrhoids, but it can also signal more serious problems, so it should not be ignored.

Quick Scoop

  • Bright red blood on the paper or in the bowl often comes from the lower gut, like the rectum or anus (common with hemorrhoids or anal fissures).
  • Dark red, maroon, or blood mixed in the stool can come from higher up in the colon or small intestine.
  • Black, tar-like, bad-smelling poop (called melena) usually means older blood from even higher up, like the stomach or small intestine, and is more urgent.

If you ever pass a lot of blood, feel dizzy, faint, very weak, have severe stomach pain, or your poop turns suddenly black and tarry, treat it as an emergency and get urgent medical care.

Common Causes (Some Mild, Some Serious)

Seeing blood in poop can have many causes, and the same symptom can be either “simple” or serious depending on how much, how often, and what else is going on.

Some more common reasons:

  • Hemorrhoids (swollen veins in the anus/rectum)
    • Often cause bright red blood on the toilet paper or coating the stool.
    • Can be itchy or sore, especially when straining.
  • Anal fissure (small tear in the anus)
    • Sharp pain when you poop plus a streak of bright red blood.
    • Often linked to hard stools or constipation.
  • Infections or inflammation (like colitis, inflammatory bowel disease)
    • Can cause diarrhea, cramping, urgency, and blood or mucus in the stool.
  • Polyps or colorectal cancer
    • Polyps are growths in the colon that can sometimes bleed.
    • Blood in stool is rarely cancer, but it can be a warning sign, which is why doctors take it seriously and often recommend colonoscopy.
  • Peptic ulcers or upper–GI bleeding
    • Bleeding higher up (stomach, small intestine) tends to turn stools black and tarry instead of bright red.

What The Color and Pattern Can Mean

Here’s a simplified way people online and doctors often interpret what they see:

  • Bright red on paper / dripping in bowl after you go
    • Often from the rectum or anus (hemorrhoids, fissure).
    • Can look like “red food coloring” spreading in the water.
  • Streaks or spots of red on the stool
    • Could be from lower colon or rectum.
    • Still needs checking, especially if it keeps happening.
  • Mixed through the poop, dark red or maroon
    • May come from higher in the colon or small intestine, sometimes more serious.
  • Black, sticky, tar-like and foul-smelling
    • Often from bleeding in the stomach or upper small intestine (for example from ulcers), and is considered urgent.

When You Must Get Help

You should contact a doctor soon (same day or next available) if:

  • You see blood in your poop more than once, even if it is just a small amount.
  • You are over 40–45, or have a family history of colon polyps or colorectal cancer.
  • You also have weight loss, low energy, or changes in bowel habits (like new constipation or diarrhea lasting weeks).

You should get urgent or emergency care if:

  • You pass a lot of blood or big clots.
  • You feel faint, dizzy, sweaty, or your heart is racing.
  • You have severe belly pain or vomiting with the bleeding.
  • Your stools suddenly turn black and tar-like.

These red-flag symptoms can signal significant internal bleeding and need fast medical attention.

What A Doctor Might Do

If you go in, the clinician may:

  • Ask detailed questions
    • How long you’ve seen blood, what color, how much, any pain, any family history of gut disease or cancer.
  • Examine the area
    • Check for hemorrhoids or fissures around the anus.
    • Possibly do a quick rectal exam.
  • Order tests if needed
    • Blood tests to check for anemia or infection.
    • Stool tests to look for hidden blood or infection.
    • Scopes like colonoscopy or sigmoidoscopy to look inside the colon and rectum if there is concern about polyps, inflammation, or cancer.

Bottom line: Blood in poop can come from something minor, but it is never considered normal and always deserves a medical check, especially if it’s new, frequent, or accompanied by other symptoms.

Information gathered from public forums or data available on the internet and portrayed here.