Question: what is the difference between whey casein and soy?
Answer: Whey Protein is an animal based protein originating from cow's milk. ... Soy protein is a complete protein, like whey, and is one of the only non-animal based proteins that is “complete”. Soy is a great protein source for vegan or lactose intolerant individuals. Casein Protein, like whey, is a milk-based protein.