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What Does Baby Poop Color Mean?

Medically Reviewed by May Zhu, RDN | Published June 17, 2025

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New parents are often surprised by how much their baby’s poop changes in color and consistency. While many variations are normal, some colors can signal digestion issues or health concerns.

Baby Poop Color Guide

A baby’s poop color can indicate different stages of digestion and overall health. Most changes are harmless and linked to diet, but some colors require medical attention.

Common Baby Poop Colors and What They Mean

  • Yellow – Normal for breastfed babies, soft and seedy

  • Green – Can be due to iron supplements or rapid digestion

  • Brown – Common in formula-fed babies, firmer consistency

  • Black – Normal in newborns but concerning if persistent

  • Red – May indicate food-related color changes or blood

  • Pale or Gray – Possible liver or bile duct issues, needs medical attention

When to Call a Doctor

While poop color can vary, parents should be aware of concerning changes. Black, red, or pale-colored stools should be discussed with a doctor, especially if accompanied by other symptoms.

Warning Signs

  • Black poop beyond the first few days of life

  • Bright red blood in stool

  • Pale or clay-colored poop lasting more than one day

How to Support Healthy Digestion in Babies

For breastfed babies, ensuring a balanced milk supply helps regulate digestion. Formula-fed babies may need adjustments if they experience constipation or discomfort. Hydration, gentle tummy massages, and probiotics can also promote smoother digestion.

Summary

Baby poop colors vary due to diet and digestion, but most changes are normal. If your baby’s poop is persistently black, red, or pale, or if they show signs of discomfort, consult a doctor to rule out potential health concerns.

View Citation

[1]Vandenplas, Y., et al. (2015). "Breastfeeding and Poop Variability." Pediatrics, 135(5), e1394-e1405.

[2]Mayo Clinic. "Baby Poop Color & What It Means."

[3]American Academy of Pediatrics (AAP). "Understanding Infant Digestion."