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by jacques_chester 4611 days ago
The calorie labels you see on food are adjusted to account for average digestive and absorptive effects for the mix of macronutrients in that food.

Calories in - calories out doesn't mean "Calories on food label minus readout on the treadmill". It refers to the actual energy balance. Under no reliably observed circumstances has human biology been shown to violate the conservation of energy and matter.

The point of repeating "a calorie is a calorie" is to reconcile people to the inescapable fact that a caloric deficit, no matter how imposed, is the necessary and sufficient cause of lowered long term average body mass.

The problem is that some folk like to embrace Nirvana Fallacy as some kind of debating trump card. "You can't calculate future weight down to 1 gram resolution 6 months from now, therefore your premises are totally wrong!"

Well I can't predict the temperature in my bedroom exactly 6 months from now either. But I have a pretty good idea of what season it will be.