The real question is: What are you putting in your tank?
If you put gasoline in your diesel engine you would immediately replace it with diesel, but we put the wrong fuel in our bodies day after day and expect our bodies to keep running correctly!
It doesn’t work that way! Your body works hard to compensate for the wrong fuel, but it has limits. Most of us eat wrong for many years before we realize this, because our bodies are such magnificient creations.
Our bodies do have limits to what they can take over time.