Mental health
Learning Center
Slide show: Pregnancy stretches
Know how to relieve aches and pains as your pregnancy progresses.
Slide show: Vaginal tears in childbirth
Vaginal tears during childbirth are common. See illustrations of various degrees of vaginal tears and treatment tips.
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.
Small cell, large cell cancer: What this means
Cancer cells are classified by how they look under a microscope. Learn common terms used to describe cancer cells.
Sperm: How long do they live after ejaculation?
After ejaculation, the life span of sperm depends on the circumstances.
Spermicide
Learn how to use this type of birth control that prevents pregnancy by killing or immobilizing sperm so that the sperm can't fertilize an egg.
Stages of labor and birth: Baby, it's time!
Find out what happens during the different stages of labor and birth.
Stool DNA test
Learn about this noninvasive colon cancer screening test that can detect DNA changes in cells collected from a stool sample.
Stress test
This test gives important information about your heart health. Know how to prepare and what to expect.
Surgery for stress urinary incontinence in women
Learn what's involved in surgery to treat stress urinary incontinence, including risks, benefits and other factors to consider before making a decision.
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