Quit-smoking action plan
Learning Center
Angelman syndrome
Learn about this genetic disorder that causes developmental delays, problems with speech and other symptoms.
Alzheimer's: Can a head injury increase my risk?
Some research indicates a link between head injuries and Alzheimer's disease. So what's your risk?
Alzheimer's genes: Are you at risk?
What role do genes play in developing Alzheimer's? Are you at risk?
Allergy skin tests
Considering skin testing for your allergies? Learn about the risks, results and what to expect during testing.
Alcohol: Does it affect blood pressure?
Drinking too much alcohol can raise blood pressure to unhealthy levels.
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.
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.
Air travel with infant: Is it safe?
Planning for air travel with an infant? Know how air travel can affect a newborn's ears and breathing, and what you can do to keep your baby comfortable.
Aging: What to expect
Understand the natural changes that come with aging.
Acute flaccid myelitis (AFM)
Know the possible symptoms of acute flaccid myelitis (AFM), a rare but serious condition that affects young children.
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