Why don't we digest ourselves?

Answer 1

We don't digest ourselves because our bodies have evolved complex mechanisms to prevent this from happening. The digestive system uses enzymes to break down food, while specialized cells and protective barriers, like the mucous lining of the stomach, shield our own tissues from these enzymes. Additionally, our immune system plays a role in recognizing and protecting our body’s cells from being targeted by digestive processes. Overall, these adaptations ensure that we can extract nutrients from food without harming ourselves.