What was the most difficult meat for humans to digest?

Humans have a hard time digesting certain meats because of their high protein and fat content. The most difficult meat for humans to digest is pork. Pork is a very fatty meat, and the fat content can make it difficult for the body to break down and absorb the nutrients. Additionally, pork is a good source of protein, and the high protein content can also be difficult for the body to digest.