Nutrition basics
Learning Center
Amenorrhea
Absence of menstruation (amenorrhea) may be linked to an underlying, treatable problem. Learn about amenorrhea causes and when to seek help.
Ambien: Is dependence a concern?
Zolpidem (Ambien) for insomnia is generally safe in the short term, but some people who take it may behave dangerously, such as driving while not awake.
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.
Alzheimer's treatments: What's on the horizon?
Alzheimer's treatments now being studied include an Alzheimer's vaccine and several new medicines.
Alpha blockers
Learn how this type of blood pressure medicine works and how it also can ease symptoms of an enlarged prostate.
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.
Allergy medications: Know your options
Learn more about allergy medications. Find out what they do and how they can help your symptoms.
Allergy medications and pregnancy: What's safe?
Find out what medicines can help you manage allergies while you're pregnant.
Alkaline water: Better than plain water?
Health claims about alkaline water abound, but plain water is usually best.
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.
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