Pink poop is almost always caused by something you ate, especially beets, red-pigmented fruits, or foods with artificial coloring. In most cases, the color passes within a day or two and is completely harmless. Less commonly, a pinkish tint can signal small amounts of blood mixing with stool, which has a different set of causes worth understanding.
Foods That Turn Stool Pink
Beets are the most common culprit. They contain a red pigment called betanin that is remarkably resilient in the digestive tract. If your stomach acid isn’t strong enough to fully break down the pigment, it passes into the colon largely intact and tints your stool a reddish-pink or amber color. Only about 10% to 14% of people experience visible color changes in their urine after eating beets, but stool color changes are more common because more pigment reaches the colon than the kidneys.
Other foods that can shift stool toward pink or red include cherries, tomatoes, red dragon fruit, cranberries, and anything with heavy artificial food coloring. Bright frosting, red popsicles, fruit punch, and red gelatin are frequent offenders, especially in children. The dyes keep tinting whatever they touch as they move through your system.
How to Tell Food From Blood
The simplest test is to stop eating the suspect food and wait. If your stool returns to its normal brown within one to two bowel movements, the color was dietary. Food-related color changes are typically uniform throughout the stool, giving it an even pink or reddish hue.
Blood in stool looks different. It tends to appear as streaks, spots, or a coating on the surface rather than a consistent tint. Fresh blood from the lower digestive tract is usually bright red, while blood that has traveled from higher up appears darker, sometimes almost black. Pink stool can occur when a small amount of blood mixes with lighter-colored stool, diluting the red into a pinkish shade.
When Pink Means Bleeding
If you haven’t eaten beets, red fruits, or dyed foods recently, a pink or reddish color could indicate minor bleeding somewhere in the lower digestive tract. The most common causes are straightforward and treatable.
- Hemorrhoids: Swollen veins in the anus or lower rectum that can bleed during bowel movements, especially with straining. This is the most frequent cause of visible blood in stool for adults.
- Anal fissures: Small tears in the lining of the anus, often caused by passing hard stool. These typically cause bright red streaks and a sharp pain during bowel movements.
- Inflammatory bowel disease: Conditions like ulcerative colitis and Crohn’s disease cause inflammation and sores in the digestive lining that can bleed. This type of bleeding is usually accompanied by other symptoms like diarrhea, cramping, or fatigue over weeks or months.
Pink Stool in Babies
Parents noticing pink or reddish stool in a baby’s diaper understandably worry. In breastfed infants, one common and benign cause is cracked or bleeding nipples on the nursing parent. The baby swallows a small amount of blood during feeding, and it shows up in the diaper. Constipation can also cause a streak of blood if the baby strains to pass hard stool.
It’s worth noting that newborns sometimes produce brick-red or pinkish spots in their diapers from urate crystals in their urine, not from stool at all. These crystals look alarming but are normal in the first few days of life. If you see persistent red or pink in your baby’s diaper beyond the first week, or if it’s clearly mixed into the stool rather than sitting on the surface, it’s worth having a pediatrician take a look.
Symptoms That Need Prompt Attention
Pink stool by itself, with no other symptoms, rarely signals an emergency. But certain combinations of symptoms point to more significant bleeding that needs evaluation quickly. These include abdominal cramping or pain alongside the color change, feeling dizzy or lightheaded, unusual fatigue, or shortness of breath. These suggest enough blood loss to affect your circulation.
Severe gastrointestinal bleeding can, in rare cases, cause shock. Signs include confusion, a fast heart rate, pale skin, cold hands and feet, and sweating. This is a medical emergency. The key distinction is between an isolated color change (almost always food) and a color change paired with how you feel physically (which warrants medical attention).
A Note on Stool Tests
If you’re scheduled for a fecal occult blood test, which checks for hidden blood in stool, what you eat beforehand matters. Red meat, high doses of vitamin C (over 250 mg per day), and certain raw fruits and vegetables can interfere with results. Your provider will give you specific instructions on what to avoid and for how long before the test. If you’ve recently eaten beets or other red foods, mention it so your results aren’t misinterpreted.