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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.