Fitness basics
Learning Center
COVID-19 vaccines for kids: What you need to know
Learn about the safety and effectiveness of COVID-19 vaccines for kids, the possible side effects, and the benefits of vaccination.
Bent penis
Learn what can cause a curved erection and when you may need to see a health care provider.
Blood clots during menstruation: A concern?
Blood clots during menstrual periods aren't always a cause for a concern. But passing large clots may be a sign that something is wrong.
Unusual COVID-19 symptoms: What are they?
COVID-19 can cause a wide variety of symptoms, some more common than others. Learn about how COVID-19 can make you feel.
Blood in semen
Finding blood in your semen can be alarming, but the cause is usually benign. Find out possible causes and when to see a doctor.
CA 125 test: A screening test for ovarian cancer?
Learn why health care providers generally don't recommend a CA 125 test for ovarian cancer screening.
Vaginal dryness after menopause: How to treat it?
Low-dose estrogen therapy, vaginal moisturizers and vaginal lubricants are among treatments for this condition and the discomfort it causes.
Spitting up in babies: What's normal, what's not
Spitting up in babies is common — and usually nothing to worry about.
Baby naps: Daytime sleep tips
Know when and how long babies need to nap, how to put them down for naps and how to handle fussiness.
Dry orgasm
It's possible for men to reach sexual climax without ejaculating. Learn about the possible causes.
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