A newborn is having diarrhea after drinking breast milk. What should be done?

Patient's question:

The sky is as vast as an egg flower, four times in one night, wrong night

Doctor's answer:

Analysis of the Condition: Hello: This situation is normal, don't worry. Formula milk is generally quite dry, and after the baby eats it, the stool becomes dry as well. Pure breastfed babies have yellow, loose stools. My child was breastfed during the postpartum period and had 6-7 bowel movements a day, which were also very loose. The doctor said my baby was growing fast and recommended some fish oil supplements. When my baby was a month old, they gained 2.5 pounds and have been very healthy ever since.
Suggestions for Reference:
1. Breastfed Infant Stool:
- For breastfed infants who have not yet been introduced to solid foods, the stool is yellow or golden yellow, with a uniform, creamy consistency or small granules. Occasionally, it may be slightly green and watery, with an acidic reaction and a slightly sour but not foul odor. Bowel movements occur 2-4 times a day. If the baby normally has only 1-2 bowel movements daily but suddenly has 5-6, it may indicate illness. If the baby has frequent bowel movements but is otherwise doing well and gaining weight normally, there is no cause for concern. After introducing solid foods, bowel movements may decrease. For children over one year old, bowel movements can reduce to once a day.
2. Formula-Fed Infant Stool:
- For infants fed cow's milk, the stool is pale yellow or grayish, harder, and has a neutral or alkaline reaction. Due to the high protein content in cow's milk, there is a noticeable odor of protein breakdown. Bowel movements occur 1-2 times a day. If more sugar is added to the milk, the frequency of bowel movements increases, and the stool becomes softer.
3. Mixed-Fed Infant Stool:
- Whether breastfed or formula-fed, if the baby is also consuming starchy foods, the stool volume increases, and its hardness slightly decreases compared to milk-only feeding. The stool appears dark brown with an increased odor. If more vegetables, fruits, or other solid foods are added, the stool may resemble that of an adult. When first introducing vegetable puree, small amounts of green puree may be excreted, which some parents mistakenly believe is indigestion and stop adding it. In reality, this is common for healthy infants transitioning to new foods. If there is no diarrhea, there is no need to stop introducing solid foods. After a few days, as the digestive system adjusts, this will disappear.
Lifestyle Care:
Observing the characteristics of an infant's stool can provide insights into their digestive health.
- If the stool has a strong odor, it may indicate poor protein digestion. In this case, reduce the milk intake or dilute the milk slightly.
- If the stool is foamy, it may suggest poor carbohydrate digestion, requiring a reduction or even complete cessation of starchy foods.
- If the stool appears creamy, it may indicate poor fat digestion, so reduce the intake of fatty foods.
The color of the stool is related to chemical changes in bile. In the upper small intestine, bilirubin and biliverdin cause the stool to appear yellow-green. As it moves to the colon, biliverdin is reduced to bilirubin, turning the stool yellow. Breastfed infants' stools are slightly acidic, and oxidative bacteria may convert bilirubin to biliverdin, making the stool slightly green. In contrast, formula-fed infants' stools are more alkaline and can be further reduced to colorless fecal bilirubin, resulting in a paler color. If a formula-fed infant has green stools, it may indicate accelerated intestinal motility or inflammation, a sign of diarrhea. Some parents mistakenly believe that green stools are due to fright, which is incorrect. Certain diseases can be reflected in infant stool.
- If the stool is grayish-white, it may indicate a bile duct obstruction.
- Upper gastrointestinal bleeding or iron supplements can cause black, tar-like stools.
- If the stool contains bright red blood streaks, it may be due to rectal polyps, colon polyps, or anal fissures, requiring further examination.
- If the stool contains blood and a large amount of mucus with little solid stool, combined with intermittent abdominal pain, it may suggest intussusception.
- If the stool contains pus and blood with a foul odor, it may indicate dysentery.
In summary, attentive parents can identify issues early by observing their infant's stool. If digestive problems are caused by improper dietary balance, adjusting the diet and reducing the intake of certain foods can correct abnormal stool. However, if the stool is abnormal and not due to general digestive issues, or if accompanied by systemic symptoms, seek immediate medical attention to avoid delays.
Wishing your baby health and happiness!

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