If feces is the bits of food that our body couldn’t digest or use, is it possible to eat a diet that our bodies can use 100% and never have to defecate? And, if so, could such a diet ever be healthy or would it always be deficient in some nutrients?

Question

If feces is the bits of food that our body couldn’t digest or use, is it possible to eat a diet that our bodies can use 100% and never have to defecate? And, if so, could such a diet ever be healthy or would it always be deficient in some nutrients?

In: 90

Answer 1

If you eat nothing you excrete a substance the consistency of snot out your butt. It’s fairly hard to hold this stuff in, or fart past it, so it’s not even convenient. The stuff is likely mucous from the top end, intestinal shedding, bacteria, and water. This is first hand experience from multi day fasts, not sure if it slows down or changes when you stop eating for longer than a week. I doubt adding perfectly absorbed food to this would reduce it to zero in any case.