Breast cancer is a disease that happens when cells in the breast that are not normal grow and spread very fast. The cells group together to form a mass or lump called a tumor. Breast cancer is treated ...

Raising kids is one of the toughest and most fulfilling jobs in the world — and the one for which you might feel the least prepared. These 9 child-rearing tips can help you feel more fulfilled as a ...

The knee is a joint that joins the thighbone (femur) to the top of the shinbone (tibia). It’s made up of bones; muscles; and tissues called cartilage, ligaments, and tendons. These parts work together ...

Say hello to Chloe and Nurb and let them take you on a tour of the human body. You'll find out how the body's organs work and learn about body systems like the digestive system and brain and nervous ...

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 ...

We've all had cuts and scrapes that we can take care of at home. But what about more serious wounds — the kind that involve stitches or a hospital stay? The deeper, larger, or dirtier a wound is, the ...

Click through this slideshow to learn more about the kidneys and urinary tract. The bean-shaped kidneys filter waste products out of the bloodstream and dispose of them by creating urine. Urine is ...

If you feel stressed about a test, you’re not alone. Lots of kids feel this way. You feel stressed because you care about doing well — and you don’t want to do poorly. When you feel stressed, your ...

What Is a Breath-Holding Spell? A breath holding spell is when a child holds their breath, usually after being angry, frustrated, startled, or in pain. Sometimes the breath holding leads to the child ...

Poison ivy, poison oak, and poison sumac plants contain an oil (called urushiol) that can cause an allergic rash in most people who have contact with it. The plants look different, but they cause the ...

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 and it sits under the ...

Parents might be surprised by how their newborn looks. Before birth, babies are immersed in amniotic fluid and folded up in an increasingly tight space. Then in most deliveries, they're pushed through ...