Nutrition basics
Learning Center
10 great health foods
Add these health foods to the menu and give your diet a healthy boost.
A1C test
Learn more about the preparation for and results of this common diabetes blood test.
ANA test
An antinuclear antibody (ANA) test is one test used to help determine if you have an autoimmune disease such as lupus.
Acne
Learn more about this common skin condition, including causes, treatments and simple skin care steps you can do at home to help control it.
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.
Alkaline water: Better than plain water?
Health claims about alkaline water abound, but plain water is usually best.
Artificial sweeteners and other sugar substitutes
Get the facts on products that make food and drinks sweeter.
Asthma: Steps in testing and diagnosis
Think you or your child might have asthma? Here's what's involved in making a diagnosis.
Atypical cells: Are they cancer?
Atypical cells appear abnormal, but they aren't necessarily cancerous.
Autoimmune pancreatitis
Autoimmune pancreatitis is a relatively uncommon disease of the pancreas that may be mistaken for pancreatic cancer.
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