I have scaling health and first aid, with first aid naturalRegeneration set to true.

On world creation I have a full scaling health bar but my first aid health shows as zero for all limbs and if I take a single hit at all, either by a mob or by falling a little too far down, I die instantly.

When I eat, the first aid health will go to zero immediately for all limbs but the scaling health bar will show regeneration, and I will die on the next hit.

Never mind, the conflict was with spice of life carrot edition. It messes with the health system too much.