Consumer health basics
Learning Center
Chorionic villus sampling
Find out about this prenatal test that can uncover chromosomal and other genetic conditions early in pregnancy.
Chemotherapy for breast cancer
Learn how doctors use this drug treatment to kill rapidly growing breast cancer cells. Find out about chemotherapy side effects and what you can expect.
Cervical mucus method for natural family planning
Normal vaginal discharge can give you clues about your fertility. Learn how to track changes in cervical mucus to predict when you may be more likely to get pregnant.
Cataract surgery
Cataract surgery — Overview covers risks, complications, results of this eye surgery.
Cardioversion
Learn what to expect during this treatment to reset the heart rhythm.
Cardiac rehabilitation
Learn more about this personalized program to improve heart health through exercise, education and support.
Cardiac ablation
Heat or cold energy applied to the heart can correct rapid or erratic heartbeats. Know when you might need this treatment and the risks.
COVID-19 diagnostic testing
Find out how COVID-19 diagnostic testing is done to learn if you're currently infected with SARS-CoV-2, the virus that causes coronavirus disease 2019.
COVID-19 antibody testing
Learn how COVID-19 antibody testing is done to find out if you've had a past infection with SARS-CoV-2, the virus that causes coronavirus disease 2019.
C-section
Learn the reasons this surgical procedure to deliver a baby is done, the risks and tips for recovery.
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