Fitness basics
Learning Center
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.
Stages of labor and birth: Baby, it's time!
Find out what happens during the different stages of labor and birth.
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.
Sperm: How long do they live after ejaculation?
After ejaculation, the life span of sperm depends on the circumstances.
Solid foods: How to get your baby started
Follow these tips for starting your baby on solid foods.
Smokeless tobacco products
Learn the risks of using products such as chewing tobacco, snuff and snus.
Small bowel prolapse (enterocele)
Learn more about this condition also called a vaginal hernia that happens when the small bowel pushes down onto the top of the vagina.
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