Healthy aging: Over 50
Learning Center
Airplane ear
That fullness in your ear when on an airplane that's climbing or descending results from uneven air pressure between your middle ear and the environment.
Albinism
In this group of inherited disorders, the body makes little or no melanin, a pigment that determines hair, skin and eye color and vision development.
Albuterol side effects: Can I avoid them?
Albuterol side effects — Managing reactions to quick-relief asthma medication.
Allergies
Allergy symptoms can range from mild to severe, even life-threatening. Most allergies can't be cured, but treatments can help.
Allergy medications: Know your options
Learn more about allergy medications. Find out what they do and how they can help your symptoms.
Allergy skin tests
Considering skin testing for your allergies? Learn about the risks, results and what to expect during testing.
Alli weight-loss pill: Does it work?
Alli is an over-the-counter weight-loss pill that keeps your body from absorbing all of the fat in food. Learn about the drug's benefits and side effects.
Alpha blockers
Learn how this type of blood pressure medicine works and how it also can ease symptoms of an enlarged prostate.
Alzheimer's treatments: What's on the horizon?
Alzheimer's treatments now being studied include an Alzheimer's vaccine and several new medicines.
Alzheimer's: Medicines help manage symptoms and slow decline
Although there's no cure for Alzheimer's disease, certain drugs might help you manage your symptoms and improve your life for a time.
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