Nutrition basics
Learning Center
Fasting diet: Can it improve my heart health?
Being on a fasting diet some of the time may have heart-health benefits. Find out more.
Flu mask: Should I wear one?
Influenza masks and hand hygiene might help protect healthcare workers from flu (influenza).
Flu shot: Will it prevent the stomach flu?
The flu shot protects against influenza, which is different from the stomach flu, also called gastroenteritis.
Flu vaccine: Safe for people with egg allergy?
If you have egg allergy, you still may be able to receive the flu vaccine.
Food poisoning: How long can you safely keep leftovers?
Prevent food poisoning with these food safety tips for handling and reheating leftover food.
Frequent sex: Does it protect against prostate cancer?
Some studies have suggested that frequent ejaculation may reduce the risk of prostate cancer. But other research hasn't supported this idea.
Frontal fibrosing alopecia
This type of receding hairline, which primarily affects older women, is treatable. The earlier you talk with your doctor about it, the better your chance of preventing permanent baldness.
Heart attack prevention: Should I avoid secondhand smoke?
It's possible that secondhand smoke can irritate the arteries and increase the risk of a heart attack.
High-dose flu vaccines: How are they different from other flu vaccines?
High-dose flu vaccines are flu vaccines for older people.
High-protein diets: Are they safe?
Considering a high-protein diet for weight loss? Understand the precautions first.
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