There are no set rules about how long to wait before taking a newborn out into the world or when to let people near the baby. Some doctors recommend that parents wait until their baby is a few months ...

The temporomandibular joint (TMJ) connects the lower jaw to the skull. You can feel your two TM joints and their movement by placing your fingers directly in front of your ears and opening your mouth.

Good nutrition and exercise are important, but how do you feed a picky eater or encourage kids who don't like sports to play outside? Find out how to keep kids active and eating well.

What Is the Digestive System? Food is our fuel, and its nutrients give our bodies' cells the energy and substances they need to work. But before food can do that, it must be digested into small pieces ...

How Does the Digestive System Work? So there you are, sitting at lunch, enjoying some grilled-chicken pizza and a few orange wedges. When you're finished, you take a last drink of milk, wipe your ...

Sanfilippo (san-fuh-LEE-po) syndrome is a rare genetic metabolism disorder. A change in a single gene makes a child's body unable to break down certain carbohydrates (sugars). This leads to serious ...

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 ...

What Is Athlete's Foot? Athlete's foot, or tinea pedis (say: TIN-ee-uh PEH-dus), is a common skin infection that is caused by a fungus (say: FUN-guss). This fungus eats old skin cells. And plenty of ...

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, ...

If a child with an allergy is exposed to that allergen, their immune system mistakenly believes it's harming their body. It overreacts, treating the substance as an invader and trying to fight it off.

Sounds are everywhere, and you have two cool parts on your body that let you hear them all: your ears! The outer ear is made up of the pinna — also called the auricle (say: OR-ih-kul) — and the ear ...

Strength training (also called resistance training) is a way to build muscles and strength using free weights, kettlebells, weight machines, resistance bands, or a person's own weight. Teens may want ...