Endocrine System
The endocrine system comprises a number of glands that produce hormones with a varied array of vital functions. Learn more about how the adrenal glands, pituitary glands and the pancreas works.
Ever Stand Up and Get Dizzy?
How White Matter Helps the Brain's Gray Matter Function
Bruce Willis Has Aphasia. What Is It and What Causes It?
The True Story of the Blue People of Kentucky
What Is the Rarest Blood Type in the World?
What Does It Mean If Your Blood Oxygen Level Is Low?
What Is Saliva and How Does It Change the Taste of Food?
The World's Longest Poop Story Is a Crock of, Well ...
When You Have to Go But Don't Want People to Know
Do You Have One of the 6 Rarest Eye Colors in the World?
Why Do Babies' Eyes Change Color?
There Are 6 Different Eye Shapes. Which One Is Yours?
'Man Flu' Could Be a Real Thing
Sugars in Human Breast Milk Act as Antibacterial Agents
Does mouthwash affect your immune system?
Kidney Stones Are Excruciating, But the Source of Pain Is Surprising
Why Do We Do a Little Dance When We Have to Pee?
Do You Turn the Door Key and Have to Pee? It May Be All in Your Brain
The Lymph System
What is lymph?
How One Key Protein May Help Tendons Enhance Athletic Performance
What Are Muscle 'Knots' and How Do You Get Rid of Them?
Children Can Regrow Their Fingertips. How Cool Is That?
What Happens When the Wind Is Knocked Out of You?
The Science Behind Why We All Have Snot
Why Breathing Through Your Nose Is Best
Learn More
Sometimes referred to as the "cuddle hormone," oxytocin is released during sex and breastfeeding. But does it make you fall in love with someone or just bond you more with someone you already love?
By Dave Roos
Homeostasis comes from the Greek words for "similar" and "steady" but this state of steadiness is anything but boring. In fact, it's what you want your body to be.
By Alia Hoyt
Tired of standing on tiptoes when you pose for a photo with friends? If you're an adult looking to add a few inches to your frame, you might be out of luck.
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Dehydroepiandrosterone, or DHEA, has a growing reputation as an anti-aging supplement among vitamin users and doctors. Learn about the risks, benefits and controversy of DHEA.
Testosterone is one of the most important, but commonly misrepresented hormones found in the body. Learn about the role of testosterone.
The health of the adrenal gland is of primary importance to help prevent and treat chronic disease. Learn about techniques for maintaining the health of the adrenal gland.
Thyroid metabolism is complex, and each step can be influenced by nutrition, prescription medications and lifestyle factors. Learn how thyroid metabolism works and discover techniques for maintaining health.
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Chances are rather good you've heard the news that you have a thyroid -- but chances are also pretty decent you're not completely up to speed on exactly why you have one. What can your thyroid do for you?
The endocrine system comprises a number of glands that produce hormones with a varied array of vital functions. Hormones control or regulate the development or function of structures throughout the body.