Diet and exercise
Learning Center
Heart palpitations
Know when and how feelings of a rapid, fluttering or pounding heartbeat are treated.
Heart attack symptoms: Know what's a medical emergency
Watch for these heart attack symptoms.
Headache
Headache: Symptom — Overview covers definition, possible causes of this painful symptom.
Guide to different tick species and the diseases they carry
Learn about different tick species and some of the diseases they may carry.
GERD: Can certain medications make it worse?
Certain medicines can make symptoms of gastroesophageal reflux disease (GERD) worse. Learn more.
Food allergy vs. food intolerance: What's the difference?
Might you have to swear off milkshakes for good? Follow the symptom clues to find out whether you possibly have a food allergy or a food intolerance.
Flu symptoms: Should I see my doctor?
See a healthcare professional if you are at high risk for complications from flu.
Exercise for weight loss: Calories burned in 1 hour
Trying to lose weight or at least not gain more? Find out how many calories are burned by an hour walking, swimming or biking.
Easy bruising: Why does it happen?
Get the facts about easy bruising. Learn about causes and find out when it's a sign of a problem.
Early HIV symptoms: What are they?
Early signs of the disease can include fever, fatigue and swollen lymph glands. Learn more.
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