The milk of each of the over 4,700 mammals on earth is formulated specifically for that species. Cows diagnosed with Johne's Disease have diarrhea, and heavy fecal shedding of bacteria. This bacteria becomes cultured in milk, and is not destroyed by pasteurization. Occasionally, the milk-borne bacteria will begin to grow in the human host, and irritable bowel syndrome and Crohn's results. Homogenization Large fat molecules cannot get through the intestinal wall into the bloodstream.
Mother nature knows better.
In making cheese, the curds become the cheese. Whey's main components are bovine serum albumin and lactalbumin. There are other hormones contained in whey. Everything gets concentrated. Steroid hormones survive, as do dioxin's and antibiotics.