Whey protein is a superior protein source for muscle growth and repair due to its high leucine content.

“So if we just step back from this question and ask it in two parts, of remember the question was, is there a distinct health advantage to using bone broth or collagen protein versus whey protein? One can be very confident in the answer to that, which is whey protein contains relatively high amounts of the amino acid leucine, and therefore, is going to be the superior form of protein if your goal is to grow muscle and/or get stronger to repair muscle, either muscle damage caused by exercise or simply to engage protein synthesis.”