What are the reasons for newborn diarrhea? Why do they have diarrhea?

Patient's question:

No

Doctor's answer:

The main reasons for newborn diarrhea are:
1. Poor immune function. Due to weak resistance, newborns are easily prone to infectious diarrhea when their intestines are infected.
2. Indigestion. Overfeeding the baby with too concentrated formula, an unsuitable formula for the baby's constitution, overly cold milk, adding sugar to the formula, or introducing rice porridge or other starchy foods too early.
3. Allergies. Some babies are allergic to the protein in formula, especially those with a genetic predisposition to allergies, making them prone to allergic diarrhea.
4. Cold. Babies with colds often experience diarrhea symptoms.
5. Viral or bacterial infection. This type of diarrhea is common, with the most common cause being rotavirus infection in the intestines.