Healthy diets
Learning Center
Hematocrit test
Learn about this red blood cell blood test, including why it's used and what to expect.
HPV test
The HPV test can help identify your risk of cervical cancer. Learn more about how to prepare and what your results may mean.
Grocery store secret: Shop the perimeter
Picture your favorite grocery store. Chances are that the outer aisles are where you'll find fresh produce, low-fat dairy products and lean meats. This is where you should concentrate most of your shopping time. Why? Fresh foods are generally healthier than are ready-to-eat foods.
Gout diet: What's allowed, what's not
A gout diet isn't a treatment for gout, but it may help you manage your attacks.
Gluten-free diet
Learn about foods that are acceptable in a gluten-free diet and tips for selecting healthy, nutritional options.
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.
Glucose challenge test
Know how to prepare for this gestational diabetes screening test.
Genetic testing
Genetic testing: Learn why it's done, how to prepare and what to expect from diagnostic tests, carrier tests, prenatal tests and newborn screening.
Fecal occult blood test
Learn how doctors use fecal occult blood tests (FOBT), such as the fecal immunochemical test (FIT), to screen for colon cancer.
Eye dilation: Necessary with every eye exam?
Eye dilation is part of a comprehensive eye exam. How often you need it depends on your age and health risks.
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