Question: what is the difference between skim milk and soy milk?
Answer: Skim milk and soy milk may look pretty similar, but their content can vary quite a bit. Cow's milk is a better source of calcium, vitamin A, and vitamin C, while soy milk wins in the vitamin D and iron categories. ... And while skim milk has traces of fat (around 0.4 grams), soy milk is naturally fat-free.