Fitness basics
Learning Center
Spermatocele
Learn more about this noncancerous testicular disorder that may require surgery if it's causing discomfort. But, the condition often needs no treatment.
Smokeless tobacco products
Learn the risks of using products such as chewing tobacco, snuff and snus.
Silent heart attack: What are the risks?
This type of heart attack occurs with few, if any, symptoms. Find out more.
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.
Sex and COVID-19: Can you get COVID-19 from sexual activity?
Close contact, including sexual activity, is a risk factor for COVID-19. Find out how to lower your risk of getting the COVID-19 virus from a sexual partner.
Senior sex: Tips for older men
Sex isn't just for the young. Get tips for staying active, creative and satisfied as you age.
Scrotal masses
Lumps in the scrotum have various causes. Even painless lumps should be checked promptly by a health care professional.
Rosacea
Learn about the symptoms, skin care tips and medicines for this common skin condition of the face that causes flushing and spider veins.
Retrograde ejaculation
Learn about the symptoms and treatment options for this condition that can cause male infertility.
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