Urine isn’t created directly from food. Urea is a waste product created when your cells have nitrogen (usually in the form of ammonia) as a byproduct. The urea is collected by the kidneys and concentrated into urine, which is then stored in the bladder until you empty it.
Feces are the indigestible parts of food. The body doesn’t make a particular distinction; whatever has made it through the stomach and into the intestines goes out the back.
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