Infant health
Learning Center
Alcoholic hepatitis
Heavy drinking over years can damage the liver.
Alkaline water: Better than plain water?
Health claims about alkaline water abound, but plain water is usually best.
Allergies
Allergy symptoms can range from mild to severe, even life-threatening. Most allergies can't be cured, but treatments can help.
Allergies and asthma: They often occur together
Allergies and asthma? Find out how to control both conditions.
Allergy medications and pregnancy: What's safe?
Find out what medicines can help you manage allergies while you're pregnant.
Allergy medications: Know your options
Learn more about allergy medications. Find out what they do and how they can help your symptoms.
Allergy shots
Allergy shots offer long-term relief from allergy symptoms. The treatments take 3 to 5 years to complete.
Allergy skin tests
Considering skin testing for your allergies? Learn about the risks, results and what to expect during testing.
Allergy-proof your home
Here's a room-by-room guide to reducing allergy-triggering dust, mold, pollen and pet dander in your home.
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.
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