Why Do We Sneeze?
Achoo! Did you know that a sneeze is one of the body's natural defenses? It helps get rid of foreign invaders that sneak into your nose and threaten your lungs and other body parts.
Why Fat Cells Are Important
Fat cells store excess energy in the body. People who tend to become overweight aren't very good at burning up calories; instead they store them as fat.
Why the Doctor Looks at Your Fingernails
Did you know that at least 40 medical problems can be detected when your doctor examines your fingernails? Their color, shape and condition can tell your doctor a lot about your health.
Why the Doctor Presses Your Abdomen
When your doctor presses on your abdomen, he or she is feeling to see if any major internal organs are enlarged or tender, making them painful to touch, which could indicate disease.
Why the Doctor Takes a Blood Sample
You probably don't enjoy giving a blood sample, but it's an important part of a physical exam. From a small sample of your blood, your health care provider can order scores of tests.
Why the Doctor Uses a Stethoscope
Your doctor's stethoscope is a simple device that gives him or her crucial information about your heart.
Why You Need Water
About 80 percent of the water you take in comes from the water and other beverages you drink; the remaining 20 percent comes from food.
Your Immune System's Constant Battle
Your immune system carries on daily battles with invaders without your knowledge.
Pound for pound, your pancreas is one of the hardest-working organs you have. It's not very big -- about as long as your hand in an irregular tube shape. But your pancreas does two different yet equally important jobs.