Question: what is the difference between 1 milk and whole milk?
Answer: Skim milk, 1 percent milk, 2 percent milk and whole milk all have the same amount of protein, calcium, vitamins and minerals. Vitamin D is added to all of them. The amount of fat is the only difference between them, and it's a big difference. ... Only 1 percent milk and skim milk are truly low-fat milks.