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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

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People about to have surgery must tell their health care providers about all supplements they take.

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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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