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 ...

It’s normal for people to masturbate (touch or rub their own genitals because they like the way it feels). Some people do it to relieve stress or tension. It’s nothing to be ashamed of or embarrassed ...

How Does Air Enter the Respiratory System? Air enters the respiratory system through the nose or the mouth. If it goes in the nostrils (also called nares), the air is warmed and humidified. Tiny hairs ...

What Is Hand, Foot, and Mouth Disease (HFM)? Hand, foot, and mouth disease (HFM) is a common viral infection that causes painful red blisters in the mouth and throat, and on the hands, feet, and ...

Both the brain and the spinal cord are protected by bone: the brain by the bones of the skull, and the spinal cord by vertebrae, a set of ring-shaped bones. They're both cushioned by layers of ...

All teens feel sad or moody at times. But when a sad or bad mood lasts for weeks or longer — and when there are other changes in how a teen acts — it could be a sign of depression. Depression can get ...

Like most parts of the body, breasts can be sore from time to time for a number of reasons. Breast pain is common but rarely serious. Here are some possible causes and tips for how to feel better.

A lot of changes happen as you grow up, especially as you reach puberty (say: PYOO-bur-tee). This is the time when your body begins to develop and change. During puberty, there isn't just one event or ...

Is it Safe to Use Household Chemicals During Pregnancy? Some household cleaners and chemicals are safe to use during pregnancy while others are not. Chemicals like ammonia and chlorine might cause ...

Pinworms are tiny worms that can cause an infection in the intestines. Pinworm infections affects millions of people each year, especially school-age kids If your child develops a pinworm infection, ...

This is a general outline of the milestones on the road to reading success. Keep in mind that kids develop at different paces and spend varying amounts of time at each stage. If you have concerns, ...

Can I shave my pubic hair? Is it safe? Shaving is one way to remove pubic hair. It is fairly inexpensive, and you can do it yourself. Go slowly, pulling skin taut before running the razor over the ...