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Blood is approximately twice as thick as water because of the cells and other components found in it.
The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
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.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
There are more sensory neurons in the tongue than in any other part of the body.