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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.