Tween and teen health
Learning Center
STD testing: What's right for you?
Find out how your risk factors affect the types of tests you'll need for sexually transmitted infections (STIs).
Cancer blood tests: Lab tests used in cancer diagnosis
Blood tests used to help diagnose cancer include CBC and tumor marker tests. Other tests and procedures are needed to confirm a cancer diagnosis.
Biopsy: Types of biopsy procedures used to diagnose cancer
Learn about the different ways of collecting suspicious cells to test in the lab to diagnose cancer.
Teens and social media use: What's the impact?
Find out how to help limit the negative impact of these popular apps on your teenager.
Blood pressure chart: What your reading means
Checking your blood pressure helps you avoid health problems. Learn more about what your numbers mean.
Diagnosing Alzheimer's: How Alzheimer's is diagnosed
Even though there isn't a cure, early diagnosis of Alzheimer's dementia is important.
Sudden death in young people: Heart problems often blamed
Sudden cardiac death in young people is rare. It's not the same as sudden cardiac arrest. Learn about the risk factors and causes and when screening is needed.
Cast care: Do's and don'ts
Find out more about tips for keeping a cast safe — and your child comfortable — while an injury heals.
COVID-19: Long-term effects
Learn about the possible long-term effects of COVID-19.
Herd immunity and COVID-19: What you need to know
To protect groups of people over time, it helps to know what level of recovery or vaccination in a population makes it hard for a germ to spread.
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