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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.