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
Your body doesn’t consume everything you put in your mouth. That is why we poo, pee and vomit. They are excreting the part of your food and beverages that your body did not consume, pee and poo are more on the natural side of the process, but vomiting is more of an emergency exit strategy to prevent food poisoning or you know, the minor case of DEATH.
In general from what you consume the energy parts are divided into three main categories: fats, proteins, sugars and ”other” minor things which contains things like trace elements like minerals and salts. They are measured in 1/1000s of grams (milligrams) when the three main categories usually take the ~99% of the content of the energy. Water has zero calories, so it is zero calories.
Carbohydrates are divided into two (three) main categories: sugars, fibers (and alcohol). Your body doesn’t consume Fibers, their main function is to help the digestive system to poop. Your muscles consume most of the protein and some of the sugar, and fat deposits, skin and other places consume the excess sugars muscles.
Disclainer: This on top of my head, so some of it might be incorrect.
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