What causes a baby to have green, sticky stool?

Generally, green and sticky stools in infants may be caused by food coloring, rapid digestion, allergic reactions, lactose intolerance, gastroenteritis, etc. These conditions can be managed under a doctor's guidance through general measures or medication. Specific analyses are as follows:

1. Food Coloring

When babies consume foods rich in green pigments, such as spinach or green vegetables, or when the iron content in formula milk is high, their stool may turn green and appear sticky. Monitor the baby’s diet and adjust food types, or reduce intake of foods high in green pigments or iron.

2. Rapid Digestion

In breastfed infants, breast milk is easily digested and passes quickly through the digestive tract, resulting in shorter intestinal transit time, which may lead to greenish and sticky stools. This is usually not a cause for concern; breastfeeding can continue as normal.

3. Allergic Reaction

An allergic reaction occurs when the body is exposed to an allergen. If a baby is allergic to certain food components, it may trigger intestinal inflammation, leading to green, sticky stools. Symptoms may include rash, vomiting, and difficulty breathing. Medications such as loratadine tablets, ebastine tablets, or dexamethasone acetate injection may be used under medical supervision.

4. Lactose Intolerance

Lactose intolerance is typically caused by a deficiency of lactase, the enzyme that digests lactose. Some infants may have difficulty fully digesting lactose in breast milk or formula. Undigested lactose is fermented by gut bacteria, producing acidic substances that may result in green, sticky stools. Symptoms such as bloating and increased bowel sounds may also occur. Treatment may include lactasin tablets, lactase tablets, or Bifidobacterium triple viable capsules, as directed by a physician.

5. Gastroenteritis

Gastroenteritis is an inflammation caused by viruses, bacteria, or other pathogens entering the body. Inflammation may damage the intestinal mucosa, increase secretions, and accelerate intestinal motility, causing biliverdin in bile to be excreted before full conversion, resulting in green, sticky stools. Other symptoms may include fever, nausea, vomiting, and abdominal pain. Treatment may involve medications such as enteritis relief tablets, compound berberine tablets, or montmorillonite powder, as recommended by a doctor.

In daily life, parents should pay attention to their baby’s diet and avoid giving them irritating foods to support recovery.