Nutritional supplements
Learning Center
Flaxseed: Is ground better than whole?
Nutrition experts recommend ground flaxseed over whole flaxseed. Find out why.
Fiber supplements: Safe to take every day?
Fiber supplements are one way to add fiber to the diet. Here are some tips for using them safely.
Fecal occult blood test
Learn how healthcare professionals use fecal occult blood tests, such as the fecal immunochemical test, to screen for colon cancer.
Facial fillers for wrinkles
Find out more about facial injections, also called soft tissue fillers, that can temporarily smooth wrinkles.
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.
External beam radiation for prostate cancer
Learn about the risks and results of this procedure, which is used to deliver radiation therapy for prostate cancer.
Esophageal manometry
This test involves placing a thin, pressure-sensitive tube through your nose into your esophagus to measure pressure as you swallow.
Erectile dysfunction: Viagra and other oral medications
Get the facts on medicines that are taken by mouth for ED.
Erectile dysfunction: Nonoral treatments
Get the facts about shots, penis pumps and other ED treatments that don't involve taking medicine by mouth.
Erectile dysfunction: A sign of heart disease?
Erectile dysfunction and heart disease can be linked. Take steps to avoid both.
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