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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
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There are 60,000 miles of blood vessels in every adult human.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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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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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.