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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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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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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.