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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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The average adult has about 21 square feet of skin.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
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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.