Fiber: The Rough Stuff Your Gut Needs
Most food is broken down and used by your body. Fiber is different. It comes from plants, and your body cannot digest it. It passes right through you. That might sound useless, but fiber has some important jobs to do.
Fiber is the tough part of plant foods. You find it in beans, whole grains like oats, fruits, and vegetables. The skin of an apple and the strings in celery are fiber you can see and chew. Even soft foods such as lentils and pears are full of it.
As fiber moves through your intestines, it adds bulk. That means it gives the food leftovers some body, so the muscles in the gut have something to push along. Food moves through at a steady pace and does not get stuck. Some kinds of fiber also soak up water and turn into a soft gel. And some kinds act as food for the helpful bacteria that live in your large intestine.
A bowl of oatmeal with berries, or a bean burrito, will give you plenty. If you eat more fiber, remember to drink enough water too. The fiber works best when it has water to soak up. Next time you crunch into a raw carrot, remember that your gut is glad you picked something with fiber.