Diet and exercise
Learning Center
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
Prostate cancer screening: Should you get a PSA test?
Learn about the pros and cons of the PSA test so you're ready to talk about prostate cancer screening with your doctor.
COVID-19: Who's at higher risk of serious symptoms?
Advanced age and some health conditions can raise the risk of serious COVID-19 (coronavirus disease 2019) illness.
Joint protection for people with hand arthritis
Joint protection — photos showing joint protection techniques to avoid hand arthritis pain.
COVID-19 vs. flu: Similarities and differences
Find out the similarities and differences between coronavirus disease 2019 (COVID-19) and the flu (influenza) and learn about ways to prevent getting these diseases.
Penis health: Identify and prevent problems
Understand the factors that affect penis health and how to identify problems.
Mental illness in children: Know the signs
It can be hard to tell the difference between typical behavior and symptoms of mental illness in children. Find out what to look for and when to act.
Long COVID: Lasting effects of COVID-19
COVID-19 can have lasting symptoms that affect many parts of the body. Learn more about the symptoms and effects of long COVID.
Breast lump or breast changes: Early evaluation is essential
Find out how a breast lump or breast change is evaluated for breast cancer.
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