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Did the definition of Alzheimer's disease change?
What the change in the research definition of Alzheimer's disease means for you.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Digestion: How long does it take?
Digestion takes about two to five days, depending on your system.
Discolored semen: What does it mean?
Find out what causes discolored semen.
Dry macular degeneration
Blurred or reduced central vision could be a sign of macular degeneration. Find out about symptoms and treatment for this common eye disorder.
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.
Eastern equine encephalitis (EEE): What is it?
Find out more about a virus spread to people by mosquitoes, its symptoms and ways to prevent being infected with it.
Easy bruising: Why does it happen?
Get the facts about easy bruising. Learn about causes and find out when it's a sign of a problem.
Encephalitis
Learn about this potentially fatal condition associated with inflammation of the brain and what you can do to prevent it.
Enlarged prostate: Does diet play a role?
Lifestyle factors such as diet appear to play a role in benign prostatic hyperplasia (BPH). See what lifestyle changes may help with symptoms.
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