Preschoolers
Learning Center
Spina bifida
Learn about this condition in which an unborn baby's spine and spinal cord don't form properly. Surgery during pregnancy may be a treatment option.
Spirometry
This common test shows how well your lungs work and helps diagnose conditions that affect the ability to breathe.
Stage 4 prostate cancer
Find out about diagnosis and treatment of this cancer that has spread to the lymph nodes or other parts of the body.
Stereotactic body radiotherapy
This type of radiotherapy uses highly targeted radiation beams to treat tumors in all parts of the body.
Stomach flu: How long am I contagious?
Depending on which virus causes your stomach illness, you can be contagious from a few days to two weeks or more.
Strategies to prevent heart disease
Learn strategies you can practice now to protect your heart.
Strength training: OK for kids?
It's good for kids to build strength as long as form and safety come first.
Strep throat
Learn more about the symptoms, causes and treatment of this throat bacterial infection in children and adults.
Stuttering
Stuttering, sometimes called stammering, is a speech condition that involves problems with rhythm and flow when speaking.
Sudden death in young people: Heart problems often blamed
Sudden cardiac death in young people is rare. It's not the same as sudden cardiac arrest. Learn about the risk factors and causes and when screening is needed.
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