 [ Symptoms ] my one year old gets diarrhea after having whole milk is she lactose intloerant we started our daughter on whole milk two weeks ago and about a week later she started having very runny stool and diarrhea when she was a infant we had to change her formula to gentle ease because of the same problem so not sure what we should give her or if she is lactose intolerant her doctor said she should not be still because most infants do not have the same problem when they get older but she still does [ Disease ] give up on the whole milk for a while until the diarrhea clears and then start back on lactose free milk lactaid to see what happens keep in mind that there are many things that can cause loose stools in children so do not automatically blame the whole milk but lactose intolerance is a possibility can she eat yogurt cheese or even ice cream