Carbohydrates are the body's most important and readily available source of energy. They're a necessary part of a healthy diet for both kids and adults. The two main forms of carbs are: simple ...

The tip, or head, of the penis is called the glans. A number of conditions can cause the glans to become inflamed, including infections; certain diseases; injuries; and allergic reactions to ...

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 ...

Toe walking is when kids walk on the balls of their feet, with their heels off the ground. It’s common in toddlers as they learn to walk. Most children stop toe walking on their own by age 2. Toe ...

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 ...

Sexually transmitted diseases (STDs) are infections spread from person to person during sex (vaginal, oral, or anal) or close sexual contact. STDs are also called sexually transmitted infections, or ...

A night terror (also called sleep terror) is similar to a nightmare, but is far more dramatic. A child having a night terror wakes up screaming and is impossible to ...

Earaches are common in kids and can have many causes. Here’s why they happen and what to do when your child complains of ear pain. Give acetaminophen or ibuprofen as needed to ease pain (check the ...

Girls have lots of questions about the body changes of puberty. When will my breasts grow? What's the "normal" age to get your first period? Watch this video and find out!

Just about every guy wonders how he measures up "down-there." Here's the lowdown for any guy who's ever worried about whether his penis is a normal size. There is a wide range of normal penis sizes.

Flat feet are feet that do not have an arch. The middle of the foot touches the ground. Feet with no arches is the main sign of flat feet. Sometimes, flat feet can cause foot, ankle, or knee pain.

Aural atresia is when a baby is born without an ear canal. The baby's eardrum either didn't form normally or is missing. There also are problems with the middle ear bones (called ossicles). The parts ...