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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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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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