Is there a food the digestive system cant digest?

Answer 1

Cellulose, in general, is not digested. But it serves an important function in diet anyway as "insoluble fiber". You get cellulose fiber from foods like lettuce and other greens, asparagus -- pretty much any fibrous veggie.

An illness or allergy can prevent some people from digesting certain foods, but this is specific to the person and not typical of human beings generally.

Lactose intolerance (milk sugar) is common in adults, and is actually genetically NORMAL. The ability of adults to digest milk sugar is a genetic mutation that is typical of populations in areas where milk was an essential staple in the diet, such as the far north of Europe and other places where agriculture is difficult because of climate.

Answer 2

cellulose ( the thing that gives plant its structural integrity )

chitin ( the shells of crabs and lobster are made up of chitin )

Humans cant digest these things as they do not have the bacteria to

Answer 3

The body cannot digest fiber but do add bulk to feces--which is good. Plants, including fruits, vegetables and grains, all have fiber.

Answer 4

skin of a fatty animals,,,,,

Answer 5

Sweetcorn