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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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Everyone has one nostril that is larger than the other.
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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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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
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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.