They are endless, because meat is actually cancer-forming (check out "The China Study" by Colin Campbell and Thomas Campbell).
We tend to eat a diet too acid-forming, and this causes all sorts of problems in the body. Meat is also acidic in the body - that's just one point. Also, the meat we eat is rarely organic, meaning natural. Rather, farmers pump chemicals into meat that are toxic to the body and wreak havoc, causing all sorts of issues.
And we really only need the protein found in fruits and veggies and raw nuts/seeds.