My baby's stool smells sharp and sour: is it a digestion problem?
⚡ Short answer: Sour and sharp-smelling stool can sometimes hint at lactose or sugar digestion issues, but it's not a sign of a problem by itself.
Anonymous
bir anne · Diapers & Digestion
His stool has a sharp, sour smell. Is this a sign he's not digesting sugars or lactose well?
Maiyko AI ADVISOR
The real reply from the in-app AI advisor
Sour and sharp-smelling stool can sometimes hint at lactose or sugar digestion issues, but it's not a sign of a problem by itself. Especially if your baby's stool is also watery, foamy, or frequent at the same time, lactose digestion comes to mind.
But sour smell can also come from normal changes in bowel flora, diet changes, or the teething process. Smell alone isn't a concern.
See a doctor if sour smell goes with bloody mucusy stool, weight loss or poor feeding, discomfort and rash—these might point to a dairy allergy or intolerance. Otherwise, the smell usually passes.
⚕️ Health note: This answer is for general information only; it is not medical advice. Every baby is different — for decisions about your baby's health, consult your pediatrician.
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