Can drinking too much milk cause your stool to turn light yellow?

Not that i know of: usually yellow stools are a sign that the pancreas isn't working properly, or you aren't getting enough bile from your liver/gallbladder into the intestines to help you digest fat. We are the only mammals that consume milk after our childhood, and large amounts of milk are really not healthy for us, mostly from the fat and cholesterol that is in it. Are you having any abdominal pain? See your MD.