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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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There are more nerve cells in one human brain than there are stars in the Milky Way.