Fitness basics
Learning Center
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.
Guide to different tick species and the diseases they carry
Learn about different tick species and some of the diseases they may carry.
Learning disorders: Know the signs, how to help
Here's how to find out what's going on if your child often has trouble with reading, writing or other skills.
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.
Rheumatoid arthritis: Does pregnancy affect symptoms?
Learn how pregnancy can affect rheumatoid arthritis symptoms.
COVID-19, cold, allergies and the flu: What are the differences?
Knowing if you have COVID-19, a cold, the flu or seasonal allergies isn't easy. Find out about the differences between these illnesses.
Bleeding during pregnancy
Learn what may cause vaginal bleeding during pregnancy and when you should see a doctor about it.
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