Nutrition basics
Learning Center
Glucose challenge test
Know how to prepare for this gestational diabetes screening test.
Glucose tolerance test
These simple blood tests are performed to screen for diabetes. Your healthcare professional may suggest one or more of these tests depending on your risk factors.
Groin pain (male)
Learn more about the causes and symptoms of this type of pain. Also find out how you can treat it at home and when to get a checkup.
HPV infection: A cause of cancer in men?
Learn what types of cancer human papillomavirus can cause and how you can lower your risk.
HPV test
This test can help show the risk of cervical cancer. Learn more about how to prepare and what the results may mean.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
Hematocrit test
Learn about this red blood cell blood test, including why it's used and what to expect.
High-protein diets: Are they safe?
Considering a high-protein diet for weight loss? Understand the precautions first.
Hodgkin's vs. non-Hodgkin's lymphoma: What's the difference?
Learn how types of lymphomas are determined using lab tests to examine cancer cells.
Holter monitor
This wearable device keeps track of the heart's rhythm during daily activities. Learn when you might need one and what to expect.
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