Eating in general does a lot of mechanical and chemical damage to the body that has to be repaired. Most foods seem to contain some portion of proteins that can

Eating in general does a lot of mechanical and chemical damage to the body that has to be repaired. Most foods seem to contain some portion of proteins that can be harmful (red meat is a WHO Group I carcinogen to gut tissue). Even fructose is damaging to the liver and triggers an immune reaction. Cooking pre-digests many problematics but some portion will remain. It's the role of the immune system to deactivate the damaging proteins so that the damage doesn't accumulate. Eating and digestion are a constant balance between sustenance and wear, and problems begin when the rate of wear outpaces the rate of repair.