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.

Learn More / Page 2

The amygdala is a small part of the human brain that most humans have probably never heard of.

By Michelle Konstantinovsky

A new study found that giving your feet a boost in the bathroom lessened constipation (and straining) significantly.

By Alia Hoyt

Travelers commonly experience unusual bowel symptoms while traveling. Why is this, and what can we do about it?

By Jesslyn Shields

Advertisement

The eye twitching that's driving you crazy — it's likely caused by nothing more than stress or fatigue. But you may need to see a doctor if you have other symptoms, too.

By Michelle Konstantinovsky

Listed as an organ donor on your driver's license? That designation does not include your brain.

By Chris Opfer

Chemical flavorings interact with the solvents in vaping liquids, forming dangerous new compounds. And that's before they're even heated.

By Patrick J. Kiger

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

Advertisement

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

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

By Michelle Konstantinovsky

Advertisement

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

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

Advertisement

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

By Nathan Chandler

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

Advertisement

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

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

Advertisement

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

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