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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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The horizontal fraction bar was introduced by the Arabs.

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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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