Teen health
Learning Center
Hyperinsulinemia: Is it diabetes?
Hyperinsulinemia often is associated with type 2 diabetes.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
How your brain works
Which part of your brain does what? Take a tour.
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
Hormone therapy for prostate cancer
Find out what to expect during testosterone-blocking therapy. Learn about choices, including medicines and surgery.
Home birth: Know the pros and cons
Understand the possible risks and how to plan and prepare for a home birth.
Heart rate: What's normal?
A normal resting heart rate for adults ranges from 60 to 100 beats per minute. A heart rate above or below that may signal a problem.
Heart cancer: Is there such a thing?
Although heart tumors do occur, the vast majority of them are noncancerous (benign).
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
Have questions about sex? Ask your doctor
Your health has a big impact on your sex life and vice versa. Don't be embarrassed about discussing sex with your doctor. Your doctor can be a reliable source of information on sexual health. He or she can help you manage chronic conditions and medications that affect your sex life. Your doctor can help you understand how sexual activity may change throughout your life.
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