I always thought that most of the food comes out again after nutrients are absorbed.
For example, here is a can of noodles. It says the 800gr in the can have a total of something like 600kcal. If the entire can would be converted into fat, this would have to be about 5500 kcal. That would mean that about 90% of it comes out again.
But sometimes I eat and eat and eat and a lot less is coming out then went in.
So, how much food is actually coming out again after being processed in the body?
In: 128
Really depends on what you eat. All simple sugars will either be used to fuel your metabolism or be stored as fat. Fibers are by definition indigestible so they’ll do that their thing and be excreted. Say you eat a 100g apple that’s 80% water, 10 grams of fiber and 10 grams of sugar; you’ll excrete at least 10 grams of fiber (+some water and dead bacteria from your gut). The rest will either be used immediately, stored as glycogen or fat, and most of the water will evaporate or be excreted by your kidneys.
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