sexy_peach comments on Me

[–] sexy_peach@feddit.org 29 points 3 weeks ago (1 child)

Calorie counting can be eye opening. That said, calories from nuts in particular don't seem to be absorbed very well

[–] Opisek@piefed.blahaj.zone 11 points 3 weeks ago (1 child)

Huh, do tell. I thought the whole point of nutritional labels is that they estimate the kcal intake from heuristically determined values for the contained fats, carbs, and proteins, i.e., we get 4kcal per gram of carbs and proteins and 9kcal per gram of fat.

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[–] athatet@lemmy.zip 1 point 3 weeks ago (2 children)

Iirc they estimate the kcal by blasting it with fire and seeing how much comes out. Or something similar. They don’t really get into how well the human body digests and uses it.

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[–] Opisek@piefed.blahaj.zone 1 point 3 weeks ago

What I read is that they put humans in a bath and measured how much it warmed up or something like that, so it is supposed to be based on digestion

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[–] Anivia@feddit.org 1 point 3 weeks ago

No, that is incorrect.

Nutrition labels take the into account how well macros are absorbed and even the calories burned to digest them (protein and carbs technically contain the same amount of calories, but protein is counted as less on the nutritional label because digesting protein burns calories).

If we still measured calories by burning food, then the calories on food with lots of fiber would be wildly inaccurate

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