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Snoring can be a sign of obstructive sleep apnea. This can occur from large throat structures and other problems that block air passage.

A transthoracic echocardiogram (echo) is an imaging test. It helps your doctor assess your heart. Here's how it works.

A ganglion cyst is a firm, fluid-filled lump that can suddenly appear on the front or back of the wrist or at the base of a finger. These cysts grow from normal tissue in the wrist and fingers, and range in size from a pea to a peach pit. Read on to learn more.

As food moves along the digestive tract, it is digested. This means it's changed into substances that can be absorbed into the bloodstream.

Most sunburns are minor and go away in a few days. But sunburns can be serious. It's important to know when to get medical care.

Sharp vision depends on many factors. The parts of the eye work together to bend (refract) and focus light rays.

Understanding how different foods affect blood sugar can help you manage your diabetes.

A jaw that’s too small, too large, or crooked can cause problems with chewing, speaking, breathing, and even sleeping. The shape of your jaws also affects the way your face looks. This sheet helps you understand how the teeth and jaws work. It also describes common jaw problems that may need treatment.

Learn this exercise called arm reach or "the bird dog" to help strengthen your core muscles.