Fitness basics
Learning Center
Why isn't there a hepatitis C vaccine?
Hepatitis C vaccine development is far from straightforward, but experimental vaccines are under study.
When to brush your teeth
When should you brush your teeth? Learn how to protect your oral health.
What is meant by the term "heart age"?
Heart age is a way to understand your risk of a heart attack or stroke. By making healthier lifestyle choices, you can lower your heart age and your risk.
What are superbugs and how can I protect myself from infection?
Some bacteria and other germs are resistant to most types of antibiotics and medications that treat them. Find out the risks and how to prevent infections.
What are opioids and why are they dangerous?
Opioids are a broad group of medicines used to relieve pain. Although these medicines are effective, they can lead to addiction. Take them only as directed.
Vaccines during pregnancy: Are they safe?
Find out which vaccinations you need while pregnant and which ones to stay away from.
Tetanus shots: Is it risky to receive 'extra' boosters?
For adults, tetanus shots are recommended every 10 years.
Tanning beds: Safer than the sun?
Tanning beds don't offer a safe alternative to natural sunlight.
Stomach flu: How long am I contagious?
Depending on which virus causes your stomach ailment, you can be contagious from a few days to two weeks or more.
Sodium nitrate in meat: Heart disease risk factor?
Sodium nitrate, a preservative in some meats, may increase your heart disease risk.
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