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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
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The human body produces and destroys 15 million blood cells every second.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.