Human Body

The human body is an amazing structure made up of many fascinating parts and systems. Learn about the human body and how its systems work together.

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HowStuffWorks interviews Dr. Mathew Pombo a Orthopedic Sports Medicine Surgeon at Emory about how 3d printing is used to help people walk

You'll probably be OK if your tongue turns black and hairy, but you should definitely see a medical professional.

By Jesslyn Shields

For over 40 years, scientists have been searching for the protein that allows us to hear. Its recent discovery might help people regain their hearing.

By Jesslyn Shields

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Contact lenses fragment into microplastics that slip through water filtering systems and ultimately end up in the oceans.

By Stell Simonton

About 1 in 15 Americans over 40 smell odors that aren't there, according to a new study. And the reason why is still a mystery.

By Alia Hoyt

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

By Jesslyn Shields

Eyebrow trends over the last 100 years

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

By Michelle Konstantinovsky

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.

By Laurie L. Dove

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.

By Christopher Hassiotis

Whether you have an innie, an outie, or none at all (you'll have to read the article to find out how that's possible), we've got you covered.

By Dave Roos

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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.

By Dave Roos

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

By Robert Lamb

The discovery of a new interstitial "organ" may explain how cancers metastasize, how acupuncture works.

By Stell Simonton

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

By Nathan Chandler

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

By Melanie Radzicki McManus

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

By Patrick J. Kiger

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

By Shelley Danzy

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.

By Alia Hoyt

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

By Robert Lamb

Does it just taste bad or are there other reasons?

By John Perritano

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.

By Alia Hoyt

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A study asked participants to determine where a number of body parts such as the spleen, liver and thyroid were located in the human body. The only part everyone got correctly was the brain. Think you can do better? Take this quiz and find out!

By Alia Hoyt

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

By Jesslyn Shields