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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

A taxonomic classification of the grey wolf (Canis lupus). A taxonomic classification of the grey wolf (Canis lupus).
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Basic classification of streptococci-based on hemolysis. Basic classification of streptococci-based on hemolysis.
Classification of Antihypertensive Agents Classification of Antihypertensive Agents
Classification of Burns by Depth Classification of Burns by Depth
Taxonomic Classification Taxonomic Classification
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