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Did you know?
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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The familiar sounds of your heart are made by the heart's valves as they open and close.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."