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 ...

What Are Blood Tests? By taking and testing a small sample of a person’s blood, doctors can check for many kinds of diseases and conditions. Blood tests help doctors check how the body’s organs — such ...

What Are Heavy Metals? Heavy metals are elements that are found in soil, water, and the air we breathe. Plants take up these metals as they grow and can end up in the food we eat. Our bodies need some ...

From your nose to your toes, do you know how the body works? Take these quizzes to find out! Bones & Skeletal System Quiz Brain & Nervous System Quiz Digestive System Quiz Ears Quiz Endocrine System ...

What Causes Pain While Peeing? Pain while peeing (urinating) can be caused by different things, including: infection in the urinary tract irritation or injury of the genital area stones (small masses ...

What Are Booster Shots? A booster shot is a dose of vaccine given after a person has had the original vaccine (sometimes called a primary dose or, if more than one dose, primary series). Immunity from ...

What Does the Central Nervous System Do? The brain is like a central computer that controls all the body's functions. It is in charge of what we think and feel, how we learn and remember, and the way ...

What Steps Can Help Prevent Drowning? Drowning is a leading cause of death in children and teens. Among young children, most drownings happen in home pools or hot tubs. In teens, drowning is more ...

What Are Health Screening Tests? Health screening tests are routine tests that check for problems before signs show up. Finding problems early can make treating them easier and more effective. Health ...

The human body is an amazing machine. Learn more about it through movies, quizzes, articles, and more.

What Are Pinworms? 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 ...

, a rubbery, flexible material (the nose, for instance, is made of cartilage). Most growth plates are near the ends of long bones. Long bones are bones that are longer than they are wide. They include ...