Sex and aging
Learning Center
CT scan
This imaging test helps detect internal injuries and disease by providing cross-sectional images of bones, blood vessels and soft tissues inside the body.
Withdrawal method (coitus interruptus)
The withdrawal method — pulling the penis out of the vagina before ejaculation — isn't the most effective birth control. Learn about the pros and cons.
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.
Tricuspid valve repair and tricuspid valve replacement
These heart surgeries treat tricuspid valve regurgitation and stenosis and Ebstein anomaly, a type of congenital heart defect. Learn how they're done.
Aortic valve repair and aortic valve replacement
These types of heart valve surgeries are done to treat aortic valve disease, including aortic stenosis and aortic regurgitation.
Penis pump
Find out how this device can be placed on your penis to create an erection.
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