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Did you know?
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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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.