Body Systems

Your body is pretty amazing. At any given point you have many biological processes going on -- circulatory, digestive, brain & central nervous systems and more. Learn about these body systems as well as the eye, ears, nose and throat.


Earwax might seem like just another gross bodily substance, but it serves a very important function in the health of your ear canal.

Tiny little babies are so sweet and cuddly. That is until you have to change their poopy diaper. What in the world is it that makes their poop so foul?

Boogers are more than an annoyance. Your body makes them for a very specific purpose — and it's not to gross out other people.

We all pass gas, but not all of us like to talk about it — or study it to figure out how quickly it travels out of the body.

As you're wiping away the crust from your eyes in the morning, do you ever ponder why it forms in the first place?

Any doctor will tell you not to stick a cotton swab in your ear, although most of us disregard the warning. Luckily, there are safer ways to remove earwax.

We're taught that it's impolite to pass gas in front of others, but could holding it in cause you health problems?

They say there are two types of people who pick their nose – those who do and those who lie about doing it. Would you be more prone to admit it if you found out it might be good for you? Let's see if it is.

A swish of mouthwash after brushing makes our mouths feel fresh and clean. But some scientists think your mouthwash could be hurting your immune system. Is there something sinister lurking in your oral care routine?

Everybody poops, and everybody passes gas. And guess what? Neither smell good. We'll explain why.

Your mom always told you not to pick them, but you really have no idea why. So what's up with the nasty, snotty invaders camping out in your nose?

You're at cruising altitude, on your way (finally) to your vacation destination, when you realize that your bloated feeling is about transform into an assault on your seat mates. Why does this always seem to happen?

New research shows that getting measles leaves you vulnerable to other infectious diseases until your body rebuilds its immunity -- and that can take several years.

Sneezing at the wrong moment can be downright dangerous — they've even been blamed for car accidents. But could stifling a sneeze be just as bad?

Of course we all know how to poop. But you might be missing out on a faster, healthier, more efficient way to do it.

"Pee on it" has long been the advice for a jellyfish sting or even a regular cut if nothing else is available. But is this really the best advice?

Burping can be gross, but imagine the chaos if all of that gas built up and your stomach exploded. Could it happen?

It's not a common occurrence by any means, but for people with certain conditions, straining to poop can have deadly consequences.

Now and then, we all have to suppress nature's call, sometimes until it hurts. But could holding your pee for a long time have serious consequences?

Everybody vomits on occasion, but often the urge comes at the most inopportune times. Wouldn't it be helpful if there was a way to suppress it?

The urge to sneeze can come upon you at the worst times — say during a funeral — but luckily there are ways to suppress it.

Accusing vegetarians of having smellier farts is pretty offensive. Do you need to know if you have any vegetarian guests for more than just menu planning?

According to the famed children's book "Everybody Poops," well, everybody poops. But does everyone poop every day? And what happens if you don't?

Want to keep your body running like a well-oiled machine? Step aside, expensive shakes and supplements -- water's the thing your bod craves most.

Picking your nose isn't something we do in public. And chowing down on what we find in there isn't just frowned upon -- it's pretty gross. But what happens if you do eat your own boogers? Is it dangerous? Or can it actually be good for you?