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Asthma cases in Americans are about 75% higher today than they were in 1980.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
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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.