Yeah, no. It's not normal just because people have been doing this for a long time. It has sugar which makes people addicted to it and will argue until they are blue in the face to defend it just like drug addicts will defend their behavior until their last breath. Milk can cause just as much a fatter liver as beer. People can get all their calcium from green leafy vegetables. Raw milk will also contain IGG, IGB, IGA that humans can create on their own. Adding animal immunoglobulins is not well studied. Humans can create their own.