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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.

Topics to Explore

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Does Everyone Have the Ability to Become a Genius?

Sudden savant syndrome can make you a math whiz or musical prodigy instantaneously. But how?

Ever Stand Up and Get Dizzy?

It happens to almost everyone and there are lots of possible explanations.

Every Coffee Drinker Is Unique

What's behind the fact that you can drink three cups of coffee and still feel sleepy while your coworker feels jittery after one cup? Our bodies all process caffeine differently. Here's why.

The Man Whose Blood Saved More Than 2 Million Babies

James Harrison's blood contains a rare and powerful antibody that's saved millions of Australian babies. Now, at age 81, after donating 1,173 times, he's hoping someone else will pick up where he left off.

This Year's Must-have for Music Festival Season: Ear Plugs

Music festivals are a blast, but research shows they can also be a bummer for your ears. One study even says that alcohol, coupled with loud music, can make the hearing loss worse.

A Compendium of Fart Facts, Plus One Gaseous Podcast

Enter the Fartonomicon with the guys from Stuff to Blow Your Mind. You're guaranteed to have a gas.

How Long Does LASIK Last?

You had LASIK surgery a few years ago, and your vision has started to blur again. Is this normal?

Take Care of Those Hammies

Hamstrings are a group of three muscles running down the back of the thigh, and they have a lot to do with your flexibility.

When Sound Makes You Sick

Diplomatic staffers in Havana, Cuba, recently began to suffer from a series of health problems. Were they sound-related?

Holding Hands Can Ease Pain

Holding hands can help regulate responses to stress, increasing trust and emotional well-being.

What Happens If You Don't Poop for 47 Days?

What would happen if you didn't (or couldn't) move your bowels for several weeks? Let's just say you'd be in a crappy situation.

Pooping: Not All Animals Are Created Equal

The human system for excretion is actually pretty great, especially when you start looking at what other animals have.

Many Animals Eat Grass So Why Don't Humans?

Does it just taste bad or are there other reasons?

'Man Flu' Could Be a Real Thing

Although women often think men exaggerate their symptoms when they have a cold or flu, a Canadian scientist has found that men are more susceptible to respiratory complications than women.

Why Do We Do a Little Dance When We Have to Pee?

When we've really got to urinate, kids and adults alike do the pee-pee dance. What are the theories behind the fidgeting?

Sugars in Human Breast Milk Act as Antibacterial Agents

New research finds that nontoxic, antibacterial sugars found in human breast milk might be key to the next generation of antimicrobial drugs.

Do You Turn the Door Key and Have to Pee? It May Be All in Your Brain

If you find yourself running to the bathroom the minute you get home, experts posit this is a case of mind over bladder.

How Glasses Correct Colorblindness

Colorblindness affects around 300 million people worldwide. What is it and how can glasses help?

A Human's Sense of Smell Is Actually as Good as a Dog's

Although we've often been told that dogs have a superior sense of smell to people, a new report says there's little difference.

Why Chugging a Gallon of Milk Is Nearly Impossible

Plenty of theories exist for why drinking an entire gallon of milk in one sitting is a challenge often undertaken, infrequently accomplished. Who's right?

Kidney Stone Rx: Hop on a Thrill Ride

Roller coasters: They're super fun, and they could help you pass a kidney stone without medical intervention. Who knew?

Ridiculous History: Toxic German Sausages Are Responsible for Botox

From killer sausages to canceling crows' feet, botulinum toxin has come a long way. Botoxwurst, anyone?

If Sunlight Makes You Sneeze, You're Not Alone

Is this you? This is totally you. Why do some people burst into violent sneezing fits when they encounter bright sunlight? Check your genetics.

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