Teen health
Learning Center
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.
Postpartum complications: What you need to know
Learn about self-care after childbirth and the symptoms of a possible problem.
Childhood vaccines: Tough questions, straight answers
When it comes to childhood vaccines, misinformation is common. Get the facts about vaccine safety from health experts.
Symptoms of pregnancy: What happens first
Are you pregnant? Tender breasts, nausea and fatigue are just a few early symptoms of pregnancy. Find out about these and less obvious pregnancy signs.
Fetal development: The 1st trimester
Fetal development begins before you even know you're pregnant. Here's what happens early on.
Breast cancer chemoprevention: Drugs that reduce risk
Learn about the drugs that can help prevent breast cancer in people at high risk.
Pregnancy exercises
Learn exercises that can improve your core strength and muscle tone during pregnancy.
Kegel exercises: A how-to guide for women
Find out how to strengthen your pelvic floor muscles.
Domestic violence against women: Recognize patterns, seek help
Domestic violence can happen to anyone. Understand how to break the cycle of abuse.
Sun damage
See photos of common skin conditions that are caused by too much time in the sun.
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