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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Your heart beats over 36 million times a year.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.