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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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On average, the stomach produces 2 L of hydrochloric acid per day.
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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
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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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If you could remove all of your skin, it would weigh up to 5 pounds.