Staying healthy
Learning Center
Sperm: How long do they live after ejaculation?
After ejaculation, the life span of sperm depends on the circumstances.
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.
Sleepwalking
People who get up and walk around while sleeping may not need treatment. But if it happens often, it could be a sleep disorder that needs treatment.
Sitting risks: How harmful is too much sitting?
Sitting for long periods — such as in front of the TV or at a desk — appears to increase risk of death from cardiovascular disease and cancer.
Silicone breast implants: What happens if they rupture?
Understand the health effects of ruptured silicone breast implants.
Silent heart attack: What are the risks?
This type of heart attack occurs with few, if any, symptoms. Find out more.
Signs of labor: Know what to expect
Know exactly what to expect as your due date approaches and your body prepares for delivery.
Shingles vaccine: Can I transmit the vaccine virus to others?
A shingles vaccine uses only part of the varicella-zoster virus, so you can't infect others.
Sex education: Talking to your teen about sex
Sex education is a parent's job. Here's help handling the challenge.
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