If you eat enough junk food, the stomach isn’t able to destroy everything anymore…
Don’t you mean “digest”?
This is technically correct. But it’s not limited to junk food. Go ahead and eat 30 apples in a row. The stomach won’t be able to digest everything either.
I liked the word destroy… Digestión happens in intestine BTW, only very very tiny part is digested in stomach itself.
You seem to be referring to absorption.
If you’re going to be pedantic, then digestion starts with the mouth, where it’s called mechanical digestion. Then, in the stomach, it’s called protein digestion according to Wikipedia.