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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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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Vaccines prevent between 2.5 and 4 million deaths every year.