Our food costs have dropped around 25%.
We had always bought mostly organic, so the difference is just dropping all the processed packaged stuff.
Fruit, Veg & meat hasn't really gone up that much so I think we are just eating less naturally.
I think both of us had slightly dodgy thermoregulation in different ways, I used to get severe night sweats and reckon I probably burnt off 1,000 calories just sweating in my sleep. Haven't had any major episodes since diet change, i think it was a gluten & carb thing combined.