Teen health
Learning Center
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
Home birth: Know the pros and cons
Understand the possible risks and how to plan and prepare for a home birth.
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
How your brain works
Which part of your brain does what? Take a tour.
Iron deficiency in children: Prevention tips for parents
Learn how much of this key mineral your child needs and what the health risks of not getting enough are.
Joint protection for people with hand arthritis
Joint protection — photos showing joint protection techniques to avoid hand arthritis pain.
Kegel exercises for men: Understand the benefits
Men benefit from Kegel exercises too. Follow these tips to strengthen your pelvic floor muscles.
Lecanemab for Alzheimer's disease: An option for you?
Learn whether the Alzheimer's disease medicine lecanemab may be a treatment for you.
Limbic-predominant age-related TDP-43 encephalopathy (LATE)
LATE causes symptoms similar to Alzheimer's, but may progress more slowly.
Long COVID: Lasting effects of COVID-19
COVID-19 can have lasting symptoms that affect many parts of the body. Learn more about the symptoms and effects of long COVID.
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