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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
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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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If all the neurons in the human body were lined up, they would stretch more than 600 miles.