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Diseases and Conditions

Know how to prevent, treat and control the symptoms of various diseases and medical conditions. We explain what's happening in your body when disease strikes, and what you can do to feel better faster.

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What causes an ice cream headache?

What causes an "ice cream headache" -- the headache you get when you eat something cold?

How Allergies Work

If you've got allergies, you know the drill -- sneezing, wheezing, itching. Know why you get these symptoms? You may be surprised at the answer. Learn about the immune-system mix-up we call an "allergy."

Cancer: What You Need to Know

Cancer is the subject of encyclopedia-sized books and hours of conversation in thousands of family households across the world. In this article, we'll take a look at the different types of cancers and address treatments, detection and terminology.

Cholesterol Overview

Medical research shows that high levels of cholesterol are associated with heart disease, the nation's number one killer. One in five Americans has high cholesterol -- find out if you're at risk.

Heart Disease 101

Chances are, at some point in your life, you or one of your loved ones will confront some aspect of heart disease. It's a major cause of death all over the world. Find out what you need to know.

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