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Botulism is rare, but extremely dangerous. This quiz will help you learn how to make sure the food you eat is safe.

Find out how much you know about asthma basics with this quiz.

Aplastic anemia is a rare blood disorder that affects the growth of blood cells. "Aplastic" means "lack of growth."

Each year, more than a million Americans die of heart attacks and other forms of heart disease. Low-dose aspirin therapy is one weapon in the arsenal against heart disease that also includes healthy dieting, adequate exercise, and not smoking. Learn more about aspirin's role in combating heart disease by taking this quiz

When your life seems to be spinning out of control, it's OK to seek professional mental health help.

This test measures the amount of carbon dioxide in your blood. Normally, carbon dioxide in your bloodstream causes no problems, but if you have far too much or too little of it, you may have a disease or a medical emergency.

Here are images that show the steps of using a dry-powder diskus inhaler.

Here are images that show the steps of using a dry-powder twist inhaler.

Many people don't know the facts about hepatitis C. You may be concerned about things you've heard. Read on to learn what's true about the hepatitis C virus (HCV) and what's not.