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Depending on which virus causes your stomach illness, you can be contagious from a few…

These masses of cells that form on your stomach lining usually don't cause symptoms. Learn…

Stool color is usually a result of diet and is only rarely a concern.

Learn about this noninvasive colon cancer screening test that can detect DNA changes in cells…

When you're ready to quit using tobacco, Mayo Clinic can help make your decision stick.

Learn strategies you can practice now to protect your heart.

Strength training can help you look good — and feel even better.

It's good for kids to build strength as long as form and safety come first.

Learn more about the symptoms, causes and treatment of this throat bacterial infection in children…

Strep throat in young children is uncommon, but it's possible. Learn about symptoms.

Learn how stress and hair loss can be related.

Discover how relaxation and exercise can improve your blood pressure numbers.

Stress fractures are tiny cracks in bones often caused by overuse or osteoporosis. Learn how…

Movement such as coughing, laughing and running can cause urine to leak for people with…

Laughter is powerful stress-relief medicine. Discover how to fire up your sense of humor.

Stress relievers can help restore calm to your chaotic life. When stress gets out of…

Learn how stress symptoms can affect your health so that you can take action.

This test gives important information about your heart health. Know how to prepare for an…

Find out the symptoms of and treatment for this painless condition that causes streaks on…

Learn why stretching your muscles is an important part of your exercise routine and how…

Promptly spotting stroke symptoms leads to faster treatment and less damage to the brain.

A stroke requires medical attention right away. Find out how to remember the warning signs.

Stroke rehabilitation is important for recovery after stroke. Learn about the physical, cognitive and other…

Stuttering, sometimes called stammering, is a speech condition that involves problems with rhythm and flow…

This is a painful bump along the eyelash line that can often be treated with…

Learn about how this type of bleeding in the brain is diagnosed and treated.

Learn about this common eye condition that may look alarming but is usually harmless and…

This medical emergency involves sudden loss of all heart activity. Learn how fast, appropriate care…

Sudden cardiac death in young people is rare. It's not the same as sudden cardiac…

Learn about the unexplained death of a young baby who seems healthy.