Paper is mostly made of cellulose, a complex carbohydrate derived from wood pulp. Your body, for all its amazing talents, cannot digest cellulose. It lacks the necessary enzyme to break down those tough plant fibers. So, technically, eating paper is like eating a very bland, very dry piece of dietary fiber.
But here’s the kicker: that indigestible fiber isn’t automatically a villain. In small amounts, a bit of cellulose can act like a broom, sweeping through your digestive tract. It’s the same stuff you find in celery, apple skins, and bran flakes. But a celery stalk has water and nutrients; a sheet of printer paper has bleach, chalk, and chemical binders.
The real risk isn’t the fiber—it’s the toxic additives. Most papers are coated with titanium dioxide, resins, and formaldehyde to make them bright and smooth. Swallow a corner of a napkin by accident? No big deal. Try to make a meal of office paper? You’re asking for a stomach ache, a blockage, or worse.
