Diet and exercise
Learning Center
Alkaline water: Better than plain water?
Health claims about alkaline water abound, but plain water is usually best.
Alcoholic hepatitis
Heavy drinking over years can damage the liver.
Alcohol: Does it affect blood pressure?
Drinking too much alcohol can raise blood pressure to unhealthy levels.
Alcohol use: Weighing risks and benefits
Drinking alcohol in any amount is a health risk that increases with each drink you have. The risk peaks with heavy drinking, including binge drinking, which carries serious health risks.
Alcohol use disorder
Unhealthy alcohol use ranges from mild to severe, including alcoholism and binge drinking, putting health and safety at risk. Early treatment is important.
Alcohol poisoning
This condition is due to drinking large amounts of alcohol in a short time. It is serious and can be deadly. Here's what to do in an emergency.
Alcohol intolerance
Having an immediate reaction after drinking alcohol, such as a stuffy nose and skin flushing, might indicate alcohol intolerance.
Albuterol side effects: Can I avoid them?
Albuterol side effects — Managing reactions to quick-relief asthma medication.
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.
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