Nutrition basics
Learning Center
Taurine in energy drinks: What is it?
Energy drink ingredients can cause concern for some who consume these beverages.
Sunburn
Learn more about how UV rays harm your skin and what you can do for symptom sunburn relief and how to protect yourself from sun exposure.
Sun damage
See photos of common skin conditions that are caused by too much time in the sun.
Sudden infant death syndrome (SIDS)
Learn about the unexplained death of a young baby who seems healthy.
Strep throat in young children: A common diagnosis?
Strep throat in young children is uncommon, but it's possible. Learn about symptoms.
Strep throat
Learn more about the symptoms, causes and treatment of this throat bacterial infection in children and adults.
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.
Spitting up in babies: What's normal, what's not
Spitting up in babies is common — and usually nothing to worry about.
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.
Spider bites
Learn more about prevention, symptoms, complications and treatment of spider bites, which are usually harmless.
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