Semi-realistic Regeneration and corresponding Increased Consumption

[Bruno]

Originally Posted by vicky_molokh

I don't recall the precise numbers, but IIRC ('normal') sugars don't provide an enormous storage efficiency advantage, so might need to think of something else. Quick wiki check gives sugars 17MJ/kg, while fats get 37.

I was suggesting sugars because you specified "not fat", but mobilizing fat reserves has more potential for liver failure. Malnutrition causes mobilization of fat, which can choke the liver, leading to fatty liver, and then we're back to liver failure again. Plus pressure of your engorged liver on your other abdominal organs and the enormous amount of heat being produced by your liver struggling to process everything (which is wasted calories and also gives you a fever).