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Aortic valve disease
Learn more about diseases that affect the valve between the heart's main pumping chamber and the body's main artery.
Anxiety disorders
Learn the symptoms of this mental health condition, and ways to manage worry and fear that interfere with your daily activities.
Antidepressants for children and teens
Antidepressants are often effective in treating depression and anxiety in children and teenagers, but there are some risks. Learn more.
Angelman syndrome
Learn about this genetic disorder that causes developmental delays, problems with speech and other symptoms.
Anaphylaxis
Anaphylaxis, a severe allergic reaction, is an emergency. Learn who's at risk, what to watch for and what to do when it occurs.
An easy way to add omega-3
Want to add omega-3 to your diet but don't like fish? Try crab instead. Crab meat also has omega-3 fatty acids. Combine canned crab with citrus vinaigrette and serve over salad. Keep salt and calories low by making your own dressing. It's as easy as whisking together 1/4 cup lime or lemon juice, 1/4 cup rice wine vinegar, 1 teaspoon sugar and your favorite herbs.
Alzheimer's prevention: Does it exist?
Alzheimer's prevention: Strategies for staying physically and mentally fit may be most effective.
Alzheimer's disease: Can exercise prevent memory loss?
Regular exercise may help in preventing Alzheimer's disease and improving cognitive function.
Allergy-proof your home
Here's a room-by-room guide to reducing allergy-triggering dust, mold, pollen and pet dander in your home.
Allergy skin tests
Considering skin testing for your allergies? Learn about the risks, results and what to expect during testing.
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