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Health | Human Body | Digestive System

The digestive system is in charge of absorbing and transporting nutrients your body needs in order to thrive -- and it gets rid of all the waste the body doesn't need. Discover how saliva breaks down the food you eat and more.

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How the Digestive System Works

What happens to your lunch after you eat it? As you read this, your digestive system is hard at work, taking it on a wild ride through your body.


What the Poop? Test Your Fecal Facts With This Quiz

What the Poop? Test Your Fecal Facts With This Quiz

Is your poop proficiency unparalleled or totally in the crapper? Take the poop quiz and find out! See more »

Fart-tastic Facts Quiz

Fart-tastic Facts Quiz

Do you have what it takes to earn ultimate stink-out points? Take this fart facts quiz and find out! See more »

When you smell poop are you actually inhaling poop molecules?

When you smell poop are you actually inhaling poop molecules?

Smelling poop is gross enough, so the possibility that poop molecules are getting into your nose is outright disgusting. Learn more at HowStuffWorks. See more »

Why is baby poop so smelly?

Why is baby poop so smelly?

Baby poop is smelly. Find out why baby poop stinks at HowStuffWorks. See more »

How fast does a fart travel?

How fast does a fart travel?

We all fart, but how fast does that fart travel out of your body? Find out and learn more about passing gas at HowStuffWorks. See more »

What happens when you hold in a fart?

What happens when you hold in a fart?

Could holding in a fart be bad for your health? Find out what happens when you hold in a fart at HowStuffWorks. See more »

Why do farts stink?

Why do farts stink?

Everybody poops, and everybody passes gas. Learn why farts stink at HowStuffWorks. See more »

Why do I get gassy when I fly?

Why do I get gassy when I fly?

Relax. Everyone gets gassy when they fly. Find out why air travel makes you fart at HowStuffWorks. See more »

Is there a right way to poop?

Is there a right way to poop?

Of course we all know how to poop. But you might be missing out on a faster, healthier, way to do it. Find out if there is a right way to poop. See more »

If you never burped again, would your stomach explode?

If you never burped again, would your stomach explode?

Burping can be gross, but imagine the chaos if all of that gas built up in your stomach. Find out if never burping again would cause your stomach to explode. See more »