What Does the Heart Do? The heart is a pump, usually beating about 60 to 100 times per minute. With each heartbeat, the heart sends blood throughout our bodies, carrying oxygen to every cell. After ...

The digestive process starts even before the first bite of food. Find out more about the digestive system and how our bodies break down and absorb the food we eat.

It’s normal for people to masturbate. Some people do it to relieve stress or tension. It’s nothing to be ashamed of or embarrassed about.

Learn which nutrients you need while pregnant or breastfeeding, and easy ways to add them to your diet.

What makes up a guy's reproductive system and how does it develop? Find the answers to these questions and more.

What Is the Thyroid? The thyroid (say: THYE-royd) is a gland, which is an organ that makes special chemicals called hormones (say: HOR-moans). The thyroid is shaped like a little butterfly or bow tie ...

It may seem scary to go to a hospital, but doctors and nurses are there to help people who are sick or hurt feel better. Read our article for kids to find out what happens inside a hospital.

Lead is a metal that's found in the environment and many consumer products. It can be toxic (poisonous) to people and animals. Lead poisoning happens when too much lead gets into the body. In kids, ...

What Are Cochlear Implants? A cochlear implant is a surgically placed device that helps a person with severe hearing loss hear sounds. The cochlea is a snail-shaped part of the inner ear. It turns ...

When you go to the doctor for a checkup, it's because your parents and your doctor want to see that you're growing just the way you should. Read all about what happens at the doctor's office.

It's important to be consistent about discipline. If you don't stick to the rules and consequences, kids aren't likely to either. Find out how to vary your approach to fit your family.

Coughing is a healthy reflex that helps clear the airways. A severe cough or one that lasts more than a week requires a medical checkup. But many coughs are caused by a virus that just needs to run ...