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Learning Center
Early miscarriage: Is stress a factor?
Early miscarriage is usually caused by an abnormality with the baby — not maternal stress.
Does sunscreen expire?
Wondering whether sunscreen expires? Get the facts about how long sunscreen lasts.
Does soy really affect breast cancer risk?
Soy foods reduce the risk of breast cancer, but more research is needed to determine whether soy supplements are equally beneficial.
Dental floss vs. water flosser: Which is better?
Cleaning between your teeth every day is an important part of good oral health.
Coronavirus: What is it and how can I protect myself?
Coronavirus disease 2019 (COVID-19) is caused by a virus that spreads between people. Find out how to protect yourself and those close to you.
Coping with pain after breast surgery
Pain is common after mastectomy and other breast cancer operations. Find out what causes it and learn about treatment options.
Colon cancer screening: At what age can you stop?
Some groups recommend people over 75 may consider stopping colon cancer screening. Not everyone agrees. Learn about your colon cancer screening options.
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.
Chickenpox and pregnancy: What are the concerns?
Understand the risks posed by chickenpox during pregnancy.
Cervical length: Why does it matter during pregnancy?
If cervical length during pregnancy shortens too soon, there might be an increased risk of preterm labor.
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