Fitness basics
Learning Center
3D mammogram
Find out what to expect during a 3D mammogram to look for breast cancer. Learn how this newer test compares to a standard mammogram.
Home pregnancy tests: Can you trust the results?
Wondering if you're pregnant? Know the pros and cons of home pregnancy testing.
Rheumatoid arthritis: Does pregnancy affect symptoms?
Learn how pregnancy can affect rheumatoid arthritis symptoms.
COVID-19 infections by race: What's behind the health disparities?
Understand how underlying health conditions, the places where people live and work, and racism can affect who becomes seriously ill with COVID-19.
COVID-19: Long-term effects
Learn about the possible long-term effects of COVID-19.
Benign peripheral nerve tumor
Learn more about the different types of tumors that grow on or around the nerves that link to the brain and spinal cord.
Intraoperative magnetic resonance imaging (iMRI)
Find out how neurosurgeons use intraoperative magnetic resonance imaging (iMRI) during brain surgery.
Mood disorders
These conditions affect emotions. Depression causes a feeling of deep sadness. Bipolar disorder goes back and forth from being very sad to being very happy.
Video: Ovulation
Ovulation — the release of an egg from an ovary — occurs about midway through the menstrual cycle. See how it happens.
Video: An asthma attack
What happens to your airways during an asthma attack?
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