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The average office desk has 400 times more bacteria on it than a toilet.
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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
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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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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.