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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
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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.