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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.