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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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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Captive breeding programs. Captive breeding programs.
Chemosynthesis-based community on the East Pacific Rise. Chemosynthesis-based community on the East Pacific Rise.
Ads from the public service campaign in the late 1960s and early 1970s that encouraged people to get ... Ads from the public service campaign in the late 1960s and early 1970s that encouraged people to get ...
Life Expectancy in Developed Countries Life Expectancy in Developed Countries
Population and Community Health Nursing, 6th Edition Population and Community Health Nursing, 6th Edition
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Video: Cellular Respiration & Glucose Mobilization (Glucose transport & Phosphorylation of Glucose)

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