Are casein and whey found in both cows milk and human mothers milk?
WB: Yes. I think it’s interesting to note, however, that human mothers’ milk is mostly whey during the early parts of lactation while cows’ milk is primarily casein. Human infants are probably much better off ingesting whey-based rather than casein-based or soy-based formulas, in my opinion, and there has been some research that points in that direction. LE: What is whey itself made of? Is it a complicated protein? WB: Yes, whey is actually a fairly complex protein. It has many protein subfractions, most of which have yet to be really studied as separate entities from whey. What we do know is that many of the small subfractions that are found in whey have their own unique effects on health. LE: Are there any good examples you can think of off the top of your head? WB: Sure. There is a subfraction in whey called lactoferrin. It’s only found in very small quantities in well-made whey proteins, though many products contain virtually none due to the type of processing employed. Anyway, lac
