Veggies would argue that we don't need animal protein.
Can anyone direct me to science based research on the topic? I'm not sure I trust the arguments on either side.
Example of a veggie argument:
http://www.forksoverknives.com/slaying-protein-myth/
Indeed, protein is an essential nutrient, absolutely critical not just in building and repairing muscle tissue, but in the maintenance of a wide array of important bodily functions. But does it matter if our protein comes from plants rather than animals? And how much do we actually need?