Black Poop In Babies: Is It Normal, Causes And When To worry 

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Parents often observe the color of their baby’s poop to ensure that they are pooping right. However, a change in bowel movements or poop’s color, such as black poop in babies, can raise concerns.

Baby poop can be of different textures, colors, smells, and consistencies. They can usually be seen in green, yellow, tan, brown, and some other colors as well (1). The usual color should be brown because of the bilirubin pigmentⁱThe yellowish pigment made by breaking down red blood cells that travel through the liver and excreted out of the body. secreted from the liver. The bilirubin flows into the small intestines and turns brown as it passes through the small intestines (2). However, any other color of poop in babies could be due to an underlying condition and may require doctor consultation.

Read on to know about black stool in babies, including its cause, meaning behind the colors, and when you should worry.

Is Black Stool In Babies Normal?

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While black poop is common in newborns, you should be concerned if you notice it in your baby who is over three days old (3).

The first stool of newborns is called meconium. This sticky stool consists of amniotic fluidⁱA liquid in the amniotic sac that surrounds and protects the fetus in the womb during pregnancy , intestinal epithelial cells, lanugo, mucus, bile, and water swallowed in utero. Meconium is often black, green, brown, or yellow and passed 24 to 48 hours following birth.

Several reasons could cause your baby to poop black or tarry feces. While black stools in babies can often be caused by food and medications, which is normal, black stools due to other reasons, such as bleeding in the stomach or any part of their digestive system or gastrointestinal tract, warrant immediate medical attention (4).

If your baby’s black poop is accompanied by a foul smell, it often signals a problem in your baby’s upper digestive tract (5).

Quick fact

The passage of meconium reduces your baby’s risk of developing jaundice. Formula-fed babies take longer to pass meconium than breastfed babies because the first milk colostrumⁱThe first breast milk made by the body in the first few days after giving birth acts as a laxative (6).

What Causes Black Poop In Infants?

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The most common causes of black poop in infants include (4) (6)

• Specific foods

Foods such as blueberries, licorice, oreo cookies, dark chocolate, and grape juice can give your baby’s poop a tarry black color.

• Medications

Iron supplements and bismuth-containing medicines, such as Pepto-Bismol, can cause black poop in your baby

. These are generally not a cause for concern.

• Digested blood

In some cases, babies digest blood that appears as black poop. This can occur if the baby is breastfeeding and has swallowed blood from the mother’s cracked, bleeding nipples.

These causes are usually not concerning. However, black poop can also result from bleeding in the baby’s digestive tract. The bleeding can occur either in the upper or lower gastrointestinal tract.

Some concerning causes of back poop in babies include (7) (8)

• Internal bleeding such as bleeding in the esophagusⁱA muscular tube that passes food and liquids from the mouth to the stomach. , stomach, or upper part of the baby’s small intestine
• Gastritis — inflammation of the stomach lining
• Intolerance to milk protein
• Complications of the liver, such as cirrhosis
• Clotting disorders
• PolypsⁱA protruding growth of tissue on a surface inside your body or a mucus membrane

When To Seek Medical Attention For Black Poop In Babies?

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If you find any of the following signs and symptoms along with your baby’s black poop, call their pediatrician right away (8).

• Dizziness
• Lightheadedness
• Fever
• Blood in the stools
• Vomiting of blood
• Child looking pale

How To Manage Black Stools In Babies?

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Identifying the precise cause of black poop in babies is vital for its effective management. The following are some tips you may consider for managing your baby’s black poop.

• If your baby’s black poop results from taking a food item, discontinuing the food item can help resolve the problem.

• If the black stool is due to a medication, the healthcare provider may either stop or prescribe an alternative medicine to resolve the problem.

• If your baby presents other symptoms, the underlying cause needs to be identified and resolved. Diagnostic tests along with medical history and other investigations may be required to determine the cause of your baby’s black poop.

Other Colors Of Baby Poop

Apart from black, the following are other baby poop colors that may indicate an underlying problem.

1. Red poop

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Also called bloody stools, 90% of red baby poop is not a result of bleeding. A large number of foods can cause your baby’s poop to turn red. These include beetroot, cranberries, tomato-based foods, and red Jell-O. However, this is usually harmless and disappears with a change in diet (4). Blood in baby’s stools might also result from cow’s milk protein allergy (CMPA), one of the most common causes of allergy in infants during their first year of life. According to experts, CMPA may develop in breastfed infants if their mother is drinking cow’s milk or consuming cow’s milk products. However, formula-fed babies may also develop CMPA if they are consuming cow milk-based formula (9).

In a few cases, red streaks on your baby’s diaper may indicate something more serious, such as (10):

• Constipation
• A small anal tear
• Bacterial diarrhea (due to infection caused by bacteria)
• Bleeding in the lower part of the digestive system
• HemorrhoidsⁱSwollen and enlarged veins in and around your anus and lower rectum, also called piles

Be watchful

See a doctor if your baby’s red poop is accompanied by pink-colored urine, stomach pain, or rectal injury (10).

2. White poop

This happens if your baby isn’t producing enough bile. Chalky white poop in babies is a cause for concern as it may indicate a liver or gallbladderⁱA small pear-shaped internal organ on the upper right portion of the abdomen under the liver problem (7). If you notice your baby passing white or pale gray poop, seek medical advice right away.

3. Dark gray poop

A dark gray baby poop indicates that the baby is not digesting food properly. This is common in formula-fed babies during digestion, as the formula can be difficult for babies to digest.

4. Dark green poop

Any shade of the brown or green baby stool is considered normal and often common in breast milk-fed babies (4). A watery and greenish poop in infants, on the other hand, is a cause for worry. Green watery baby poop is common with diarrhea and needs to be treated immediately (10).

5. Orange poop

An orange poop in babies is normal and is indicative of healthy breast milk or formula intake. Solid foods such as carrots or sweet potatoes may also cause orange stools in weaning babies. Additionally, maternal intake of foods or medicines with an orange food dye may get passed on to the baby through breast milk, causing an orange poop (11) (12).

6. Mustard yellow poop

A seedy and pasty mustard-yellow poop is normal in a healthy breastfed baby. Most formula-fed babies may also have a similar pasty poop consistency that is a similar shade of yellow (11) (3).

Point to consider

Sometimes, the presence of bile may cause dark green stool, which may look black due to poor lighting. Since the dark green color is normal, don’t get alarmed (4).

Frequently Asked Questions

1. Can formula cause black stool in babies?

Babies consuming an iron-fortified formula may sometimes pass dark green or greenish-black stools (3).

2. Does black stool in babies go away?

Black stool in babies can self-resolve in a day to a few days, depending on the underlying cause. If the baby shows black stool with other signs of poor health, consult a doctor.

3. Can bananas cause black poop in babies?

Bananas usually don’t cause black poop. However, you may notice black threads in your baby’s poop if they eat bananas. Those threads are the center part of the banana (13).

4. What is the poop frequency in infants?

Poop frequency in infants varies depending on various dietary factors. Most breastfed infants tend to poop more frequently when compared to formula-fed babies. The baby may pass several stools in a day to one stool every two to three days. Babies on a solid diet may have varying pooping patterns based on how much solid food they eat. Some babies may poop after each meal, while some may not have any notable pooping pattern (14) (15).

5. What does breastfed baby poop look like compared to formula-fed baby poop?

Generally, exclusively breastfed babies have watery and seedy stools that are commonly mustard-yellow in color. However, formula-fed babies tend to have mustard-colored poop that’s more paste-like in consistency (12). Also, breastfed babies have more frequent bowel movements compared to formula-fed babies (14).

Black poop in babies is common for the first three days of life and is usually not a cause for concern. However, if your baby is older than three days and still passes black stool, it may be due to underlying factors, such as food or medications your baby is taking or digested blood. In some rare cases, black stools can be due to bleeding in the digestive system. Hence, consult your doctor promptly if the black stools are accompanied by other symptoms, such as fever, blood in the stools, or lightheadedness.

Infographic: Uncommon Causes Of Black Poop

For most new parents, spotting an unusual infant poop color could raise concerns. Dark-colored baby poop is normal in the initial days after birth, but a few specific conditions that lead to black poop need to be treated in time. This infographic may help you understand the more severe causes of a baby’s dark or black stools.

Illustration: Momjunction Design Team

Key Pointers

• Black poop is common in babies and could be due to medications or food.
• You can manage it by discontinuing either a specific food or medication.
• Consult a doctor if you notice it for three or more days.

Are you worried about your baby’s poop? Learn what’s normal and what’s not with this comprehensive guide to understanding poop colors.

References

MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.

1. Bowel Movements in Babies; Regents of the University of Michigan
2. The Poop Palette: What Do All of Those Colors Mean?; Nationwide Children’s Hospital
3. The Color of Baby Poop and What It Means; Cleveland Clinic
4. Stools – Unusual Color; Seattle Children’s Hospital
5. Black or tarry stools; MedlinePlus
6. “The Scoop on Poop”; Manitoba Government
7. What can your child’s poop color tell you?; Johns Hopkins Medicine
8. Bloody or Tarry Stools; Nicklaus Children’s Hospital
9. Selma Aktaş et al.; (2017); Different presentations of cow`s milk protein allergy during neonatal period; The Turkish Journal of Pediatrics.
10. Stools – Blood In; Seattle Children’s Hospital
11. Inside a dirty diaper: Decoding baby poop colors; Akron Children’s Hospital
12. The Definitive Guide To Baby Poop; Northwell Health
13. Starting Solid Foods; UCSF Benioff Children’s Hospital
14. Baby Poop Guide; Children’s Hospital Colorado
15. Pooping By the Numbers; American Academy of Pediatrics

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