Nutrition basics
Learning Center
Ischemic colitis
Ischemic colitis occurs when a part of the colon experiences a decrease in blood flow. It can cause serious complications but usually resolves on its own.
Video: How to use a dry powder disk inhaler
Watch these step-by-step instructions for using a dry powder disk inhaler.
How your brain works
Which part of your brain does what? Take a tour.
Which CPAP masks are best for you?
CPAP masks come in a variety of styles. See some of your options.
Melanoma pictures to help identify skin cancer
See pictures of this type of skin cancer to know what skin changes might cause worry.
Dietary supplements for erectile dysfunction: A natural treatment for ED?
Some dietary supplements for erectile dysfunction might work and some might be dangerous. Get the facts.
Glioblastoma
This fast-growing cancer starts in the brain or spinal cord. Treatments include surgery, radiation and chemotherapy.
Bladder cancer
Blood in the urine (hematuria) sometimes is a sign of bladder cancer. Learn about other bladder cancer signs and symptoms and explore treatment options.
Intracranial hematoma
This collection of blood within the skull is a serious, possibly life-threatening, complication of a head injury.
Dry mouth
With this condition, also known as xerostomia, the salivary glands in the mouth don't make enough saliva to keep the mouth wet.
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