Why does the system permit a corn cob but forbid corn bread?
Whole corn vs corn flour
What the system says
This distinction follows the system's broader logic relatively consistently: whole corn (boiled cob, natural popcorn) is structurally intact, but once milled into flour and turned into bread it falls into the "baked goods" category that the system bans alongside white flour, oats, and couscous.
What science says
Scientifically: whole corn has more fibre than corn flour and raises blood sugar more slowly — this is broadly agreed upon. But corn bread itself isn't "harmful" — it's just refined carbohydrate, much like the white rice the system fully permits. The system's logic here isn't entirely consistent.
Choose whole corn generally for more fibre, but not because the flour is "toxic." If you're eating white rice daily under the system, banning corn bread doesn't add much health-wise.