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Did you know?
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.