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Vaccines prevent between 2.5 and 4 million deaths every year.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.