Nutrition basics
Learning Center
Health issues for gay men and other men who have sex with men
Understand health concerns for gay men and other men who have sex with men, and learn how to promote good health.
Fall prevention: Simple tips to prevent falls
Stay safe and maintain your independence with these simple fall prevention measures.
Hormone therapy for prostate cancer
Find out what to expect during testosterone-blocking therapy. Learn about choices, including medicines and surgery.
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.
Flu vaccine: Safe for people with egg allergy?
If you have egg allergy, you still may be able to receive the flu vaccine.
Diet soda: How much is too much?
Diet soda may help you cut calories, but other low-calorie options abound.
Flu mask: Should I wear one?
Influenza masks and hand hygiene might help protect healthcare workers from flu (influenza).
Stomach flu: How long am I contagious?
Depending on which virus causes your stomach illness, you can be contagious from a few days to two weeks or more.
Cold and flu viruses: How long can they live outside the body?
Some viruses are more resilient than you may think. Learn more about how they spread and how to protect yourself.
Does sunscreen expire?
Wondering whether sunscreen expires? Get the facts about how long sunscreen lasts.
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