From enjoying the great outdoors to playing sports safely, here's how to protect yourself and deal with emergencies.

Sometimes you need help to stay healthy! Learn about going to the hospital, what a dentist does, how stitches help, and more.

One of the first tests you may have when you’re pregnant is a blood test to check your blood type and Rhesus (REE-suhs) factor, or Rh factor. Your Rh factor may play a role in your baby's health, so ...

What Is the Digestive System? The digestive system breaks down the food we eat into tiny parts to give us fuel and the nutrients we need to live. As food breaks down, we get amino acids from protein, ...

The male reproductive system is made up of the parts inside and outside the body that help a male make a baby. Both the male and female reproductive system are needed for this. The male reproductive ...

We see and hear about hearts everywhere. A long time ago, people even thought that their emotions came from their hearts, maybe because the heart beats faster when a person is scared or excited. Now ...

What Is the Heart and What Does It Do? The heart is an organ that’s a pump, usually beating about 60 to 100 times per minute. With each heartbeat, the heart sends blood throughout your body, carrying ...

What Does the Immune System Do? If you've ever wondered how your immune system works, this movie is for you!

Sore throats are usually caused by viruses. Here's what to do if your child has a sore throat.

What Are the Lungs and Respiratory System? The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out ...

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 ...

Cradle cap is the common term for seborrheic dermatitis (seb-eh-REE-ik dur-muh-TYE-tis) of the scalp in infants. Seborrheic dermatitis, also called seborrhea (seb-eh-REE-uh), can show up: on the scalp ...